• US2091697A - Indicating mechanism : en
  • CH192767A - Shock absorber device for pivots. : en fr
  • CH192636A - Device for controlling the feed of tools on working machines. : de en
  • USD105884S - Design for a stocking : en
  • US2091261A - Process for hydrocarbon oil conversion : en
  • AU339736A - Improvements in or relating to machines for operating upon hides skins, leather orthe like : en
  • CH192602A - Adjustable drawing table with friction lock. : de en
  • CH192520A - Method and device for driving segment piles. : de en
  • CH192725A - Filling device. : de en
  • US2091523A - Threshing machine feeder : en
  • US2091748A - Motor vehicle : en
  • CA368400A - Control clock selector : en fr
  • USD105900S - Design for a decorative nail : en
  • US2091647A - Automatic random length trimmer : en
  • PL25131B3 - Method for the production of unsaturated alcohols or their derivatives. : en pl
  • US2091694A - Sheet material with a matte surface and method of producing the same : en
  • USD105868S - Design for a radiator cabinet : en
  • CA368413A - Electromagnetic metal casting apparatus : en fr
  • PL25285B1 - Ceramic block. : en pl
  • PL25173B1 - Double-ended folding spindle for threading machines. : en pl
  • PL25235B1 - A device in automatic lathes for feeding workpieces to the places of their next processing. : en pl
  • CA368369A - Metal container : en fr
  • US2091551A - Signaling system : en
  • US2091589A - Fire extinguishing bomb : en
  • US2091775A - Ship's hatch : en
  • CH192665A - Terminal for accumulators. : de en
  • DE649467C - Shape cutting of clay or the like for the production of sculptural and architectural work : de en
  • FR817236A - New propeller : en fr
  • GB471198A - Improvements in and relating to gun-carriages : en
  • GR6771B - ANTI-AIR SHOT. : el en
  • USD105888S - Design for a carpet sweeper : en
  • PL25118B1 - Inflated swimming belt. : en pl
  • PL25266B1 - A device for scraping and sanding wooden floors and smoothing wooden objects. : en pl
  • US2091320A - Change speed gearing : en
  • US2091676A - Collapsible umbrella : en
  • USD105848S - Design fob a vanity case ob similar : en
  • CA368332A - Electric translating circuit : en fr
  • PL25260B1 - A method for electrolytic oxidation of fine bulk articles made of aluminum and aluminum alloys, and an apparatus for carrying out the method. : en pl
  • US2091470A - Switching mechanism : en
  • US2091767A - Method for manufacturing pottery ware : en
  • DE649523C - Device for operating discharge tubes with glow cathodes, in particular X-ray tubes : de en
  • PL25209B1 - 44 ^, S - // I? Tubular timing slide for 4-stroke internal combustion engines with counter-rotating pistons working in coaxial cylinders with a common combustion space. : en pl
  • US2091908A - Charge-forming means for internal combustion engines : en
  • AU101865B2 - Improvements in cultivators and like implements : en
  • US2091361A - Method for surface decoration of a plastic : en
  • US2091475A - Plaster base : en
  • US2091689A - Photographic hardening developer : en
  • PL25146B1 - Ferromagnetic core of powdered iron and method of making such cores. : en pl
  • DE649740C - Sheet metal bending device for curved shears with mechanical eccentric drive : de en
  • AU101889B2 - Improvements in or connected withthe doors and door mountings of garages, warehouses andother structures : en
  • PL25070B3 - Floor rug made of woolen fabric. : en pl
  • US2091726A - Block for use in dieing out and similar machines : en
  • FR817523A - Automatic safety electric iron handle : en fr
  • CH192715A - Frequency multiplier for ultrashort waves. : de en
  • DE649838C - Device for stirring and mixing liquids with liquid, gaseous or solid substances : de en
  • FR817489A - Electrically operated dust extractor for cleaning : en fr
  • PL25264B1 - A method of producing wetting, cleaning, emulsifying and dispersing agents. : en pl
  • US2091469A - Grinding machine : en
  • AU101852B2 - Improvements in or relating to ' automatic ticketing' equipment for telephone or like exchange systems : en
  • AU339936A - Improvements in or relating to electron discharge devices : en
  • CA368424A - Lawn mower : en fr
  • CH192515A - Mat that insulates against heat, cold and sound. : de en
  • CA368321A - Oil processing : en fr
  • DE649725C - Process for image transmission according to the line control process : de en
  • AU421036A - Improved optical glass and method of manufacturing same : en
  • BE421431A - : en
  • PL25214B1 - Vehicle wheel. : en pl
  • US2091542A - Metal hollow building block : en
  • PL25117B1 - A method of separating dust or liquid particles from gases or vapors, and an apparatus for carrying out the method. : en pl
  • US2091557A - Marine power transmission : en
  • US2091913A - Rubber sealing ring : en
  • FR817360A - System for mounting steered wheels in electric trucks : en fr
  • FR817475A - Anti-fog auxiliary window for automobile windshield : en fr
  • FR817518A - Automotive gravel spreader : en fr
  • GB471265A - Improvements in domestic wringers and the like : en
  • PL25282B1 - Sheet metal cover for AC electric motors. : en pl
  • US2091944A - Cathode : en
  • DE649726C - Process for the production of electrical cables with insulation made from mineral powder : de en
  • FR817483A - Process for fractional separation of a mixture of hydrocarbons : en fr
  • US2091867A - Display stand : en
  • PL25153B1 - The airplane with automatic firearms, embedded inside the wing wings and attached to the longitudinal skeleton of these wings. : en pl
  • PL25158B1 - : en pl
  • US2091592A - Cream separator : en
  • US2091721A - End gate for railway cars : en
  • US2091337A - Device for trimming paper and the like : en
  • PL25247B1 - A method of treating wastewater containing dispersed decaying materials. : en pl
  • GB471210A - Improvements in flame-proof electrical apparatus : en
  • US2091675A - Material treating apparatus : en
  • USD105853S - Design for a shoe or similar article : en
  • USD105850S - Design for a game board : en
  • USD105856S - Design for a dress : en
  • GB471258A - Improvements in steel doors : en
  • FR817346A - Sterilization of milk by ionization : en fr
  • US2091714A - Protective backing for reflecting surfaces : en
  • CH192581A - Process for the production of an impregnation compound. : de en
  • GB471181A - Process for the manufacture of cellulose esters : en
  • US2091573A - Process for the manufacture of aromatic compounds containing selenium, nitrogen and sulphur, and products produced thereby : en
  • AU101892B2 - Improved apparatus for playing parquet billiards or the like : en
  • BE422634A - : en
  • US2091766A - Apparatus for the manufacture of pottery : en
  • DE649697C - Self-seller, where the number of coins belonging to a purchase can be set with pens : de en
  • US2091718A - Loom stop-motion : en
  • US2091743A - 2-amino-1-hydroxynaphthalene sulphonic acids and process of producing same : en
  • AU397136A - Forecarriage attachment for harrows : en
  • DK53508C - Cooling unit. : da en
  • US2091844A - Chain pin extractor : en
  • PL25081B1 - A method of cleaning wool and other raw animal fibers. : en pl
  • DE649887C - Screwless rail fastening on rib washer plates : de en
  • GB471266A - Improvements relating to lamp shades : en
  • GB471428A - Improvements in or relating to means for absorbing the explosion shocks in the cylinders of internal combustion engines : en
  • GB471397A - Improvements in and relating to the manufacture of titanyl sulphate dihydrate : en
  • FR817314A - Filtered : en fr
  • GB471426A - Improvements in or relating to electric discharge lamps : en
  • FR817408A - Improvements to train control systems : en fr
  • US2091436A - Carburetor : en
  • CH192629A - Device for guiding a movable member on a fixed part. : en fr
  • DE649505C - Overlock sewing machine : de en
  • FR817535A - Process for suppressing the harmful effect of copper compounds on enzymes used in the textile industry to break down starch : en fr
  • US2091561A - Safetypin : en
  • FR817291A - Process for the production of mixtures of higher fatty alcohols and their derivatives : en fr
  • FR817211A - Improvements to folding furniture as seats and tables : en fr
  • FR817305A - Process for the purification of oil and similar liquids, allowing uniform passage speeds to be obtained : en fr
  • FR817433A - Circuit controller : en fr
  • FR817476A - Process for decoking retorts and the like : en fr
  • DE649692C - Centrifugal blower for induced draft systems of combustion systems : de en
  • FR817235A - Magazine for guns : en fr
  • FR817421A - Rectifier adjustment device : en fr
  • GB471352A - Improvements in stylographic pens : en
  • CA368365A - Container key support : en fr
  • PL25072B1 - : en pl
  • DE649653C - Drum, e.g. B. conveyor drum, with a continuous fixed axis and drive by an external rotor electric motor located inside the drum and a gearbox also located inside the drum : de en
  • BE422922A - : en
  • GB471430A - Improvements in and relating to time base circuits : en
  • GB471493A - Improvements in copying telegraph systems : en
  • PL25161B1 - A method of producing paints with a fungicidal effect. : en pl
  • CH192514A - Ceiling component. : de en
  • CH192573A - Process for producing an organic bromine compound. : de en
  • GB471479A - An improved method of, and apparatus for, wrapping pipes : en
  • DE649730C - Device for regulating the underwind supply to combustion systems for dust-rich small coal : de en
  • US2091426A - Carton closing machine : en
  • US2091700A - Spindle bearing lubrication : en
  • FR817372A - Junction piece for motion pictures : en fr
  • GB471205A - Improvements in sanitary closets : en
  • CA368407A - Fluid control means : en fr
  • CH192681A - Electrolytic capacitor with wet electrolyte, especially for voltages above 350 V. : de en
  • PL25272B1 - Anti-infection mask. : en pl
  • US2091269A - Clutch mechanism : en
  • US2091433A - Production of dextrose : en
  • US2091644A - Dispensing apparatus : en
  • USD105876S - Design for a buffet : en
  • FR817402A - Adjustment device for centrifugal separators : en fr
  • DE649664C - Contact arrangement for electrical apparatus or switchgear : de en
  • DE649773C - Device for measuring the pitch on threaded workpieces : de en
  • US2091619A - Loose leaf binder : en
  • US2091706A - Storm window : en
  • CA368337A - Valve : en fr
  • CH192702A - Process for the purification of 3,6-diamino-acridinium compounds. : de en
  • US2091459A - Refrigerating apparatus : en
  • US2091703A - Coking retort oven structure : en
  • FR817283A - Device for lubricating ball or roller bearings : en fr
  • FR817393A - Rubber handles for leather goods : en fr
  • FR817423A - Advanced trim panel : en fr
  • FR817500A - Large production automatic press with block tool : en fr
  • FR817415A - Improvements in aluminum alloys and their manufacture : en fr
  • PL25144B1 - Method and device for metallurgical treatment of garbage. : en pl
  • AU108561B2 - Improvements in headlamps for automobiles : en
  • FR817293A - Improvements relating to saddles or base plates for railway rails : en fr
  • FR817404A - Method and device for the mechanical determination of the figures corresponding, for cinematographic negatives, to the diaphragms of the printers, that is to say of what is called the : en fr
  • FR817222A - Hub counters improvements : en fr
  • GB471324A - Improvements in or relating to veneers and the manufacture thereof : en
  • GB471390A - Improvements in or relating to electrode systems of unsymmetrical conductivity : en
  • PL25094B1 - Flexible articulated clutch. : en pl
  • US2091397A - Machine for reloading cartridgecases : en
  • DE649737C - Device for measuring toe-in on motor vehicle wheels : de en
  • GB471206A - Improvements in and relating to rotary scraping apparatus for sludge settlement tanks and the like : en
  • ES143798A1 - Method to prevent the aging of rubber. : en es
  • FR817453A - Improvements to heat exchange elements and their manufacturing process : en fr
  • US2091341A - Furnace for mills for hot rolling strips : en
  • US2091717A - Combined typewriting and computing : en
  • DE649735C - Heating base for heating several cooking vessels from one burning point : de en
  • DK53531C - Dustproof Wheel Hub. : da en
  • PL25258B1 - Mirror camera for continuous shooting. : en pl
  • DK53536C - Machine for Scraping Scalded Pork Bodies. : da en
  • US2091297A - Means for grinding : en
  • US2091435A - Perforating machine for printing devices : en
  • GB471480A - Cathode ray oscilloscope : en
  • US2091335A - Insulation members : en
  • US2091356A - Driving of superchargers of internal combustion engines : en
  • US2091591A - Electrical condenser : en
  • GB471384A - Improvements in mechanically coupled dynamo electric machines : en
  • US2091330A - Protector : en
  • PL25112B1 - An expansion device to convert to gas pressurized liquefied fuel for internal combustion engines. : en pl
  • FR817231A - Improvements to electrical signal transmission systems : en fr
  • GB471314A - Improvements relating to water-closet basins : en
  • DE649786C - Dry rectifier system : de en
  • FR817418A - Regulator, such as pressure reducing valve : en fr
  • PL25107B1 - Holder for the pulleys of wire pedals of railway signaling devices. : en pl
  • USD105927S - Design fob a dress : en
  • PL25155B1 - Fighting dry with a squeegee. : en pl
  • US2091378A - Fastening device : en
  • AU341936A - Improvements in or relating to cutting blocks : en
  • DE649638C - Screw press with two or more interlocking press screws : de en
  • GB471138A - Improvements in and relating to wrapping machines : en
  • GB471320A - Improvements in or relating to fluid pressure governors : en
  • FR817317A - Hardness tester : en fr
  • GB471325A - Differential or balance mechanism : en
  • GB471396A - Manufacture of azo-dyestuffs : en
  • FR817281A - screen for cinematographic projections : en fr
  • GB471345A - Safety device for machine-tools : en
  • CA368467A - Vegetable steamer : en fr
  • US2091716A - Tooth brush : en
  • FR817263A - New sports training machine : en fr
  • FR817266A - Method of decorating rubber articles : en fr
  • CA368419A - Sulphur dioxide recovery : en fr
  • US2091788A - Screw thread : en
  • US2091487A - Oil burner : en
  • US2091511A - Gum massaging and teeth exercising device : en
  • USD105909S - Design for a knitted fabric : en
  • DE649698C - Handheld device : de en
  • DE649805C - Closure for swiveling skylight windows : de en
  • ES142991A1 - Procedure for obtaining color images. : en es
  • FR817451A - Coupling system for electric vehicles : en fr
  • DE649856C - Spur brake to dampen the movement of the spur around its vertical axis : de en
  • DK53506C - Method for Manufacturing Non-Structured Activated Coal. : da en
  • DK53538C - Method and Forming Mechanism for Manufacturing Cigar Wraps. : da en
  • DE649699C - Hydraulic drive for machine tools, especially drilling machines : de en
  • GB471211A - Washing machine : en
  • GB471358A - Improvements relating to horizontal boring and like machines : en
  • GB471218A - Improvements in or relating to fishing reels : en
  • FR817296A - Improvements to pulse transmitters : en fr
  • PL25142B1 - High-frequency receiving system, especially for radiogoniometric signals. : en pl
  • US2091287A - Pumping power : en
  • US2091363A - Splitting machine : en
  • US2091415A - Internal construction of ships : en
  • US2091693A - Temperature-indicating device : en
  • US2091537A - Vacuum cleaner : en
  • US2091575A - Method of cutting gears : en
  • PL25160B1 - The method of producing anti-rot insulation. : en pl
  • CH192608A - Device for cooling the barrel of machine guns. : de en
  • DK53513C - Method of Actuating a Machine for Automatic Processing of a Carrier of Fonts and Images. : da en
  • FR817201A - Advanced slider for so-called closures : en fr
  • GB471230A - Improvements in containers, such as collapsible tubes, with screw-on caps : en
  • GB471511A - Improvements in or relating to screens : en
  • PL25227B1 - Automatic firearm, in particular a self-contained gun on an airplane. : en pl
  • PL25279B3 - A method of steaming or stepping fabrics and a device for performing this method. : en pl
  • US2091804A - Can soldering machine : en
  • USD105834S - Design for a slipper : en
  • CH192579A - Process for the production of an indigoid dye. : de en
  • CH192626A - Synchronous electric motor device for time devices. : en fr
  • CH192661A - Ribbed tube, especially for steam generators and flue gas preheaters. : de en
  • CH192607A - Billiards. : en fr
  • US2091705A - Projection apparatus : en
  • US2091369A - Fountain brush : en
  • US2091865A - Brake system : en
  • CH192647A - Device for fastening the blades of centrifugal machines, in particular those of axial fans and axial pumps, to a rotor body. : de en
  • CH192529A - Door fittings, in particular for refrigerators. : de en
  • US2091343A - Material handling equipment : en
  • US2091625A - Mop wringer : en
  • AU295036A - Improvements in and connected with veneer presses andthe like : en
  • DK53541C - Wastewater Treatment Procedure. : da en
  • DK53539C - Device at the mandrel for extruded nozzles. : da en
  • PL25123B1 - A stop lock with a latch made as a latch. : en pl
  • US2091670A - Commercial automotive vehicle with animated display advertising : en
  • GB471135A - Improvements in sandals : en
  • GB471281A - Improvements in sanitary closets : en
  • GB471250A - Improvements in electrical oscillation generators : en
  • US2091408A - Mechanical hammer and like impact tool : en
  • US2091829A - Sulphur recovery : en
  • GB471236A - Improvements in and relating to gear hobbing machines : en
  • AU437036A - An improved syphonic valve for sanitary cisterns andthe like : en
  • PL25092B1 - Headgear for drying your hair. : en pl
  • US2091252A - Stereotype matrix and production thereof : en
  • USD105929S - Design for a dress : en
  • DE649713C - Device for fastening the control elements of automatic current impulse transmitters : de en
  • FR817432A - Upholstered furniture : en fr
  • FR817445A - Individual axle control device for vehicle traveling on rails : en fr
  • AU101847B2 - Improvements in or relating to phase and frequency modulated carrier wave signalling systems : en
  • PL25198B1 - Toothpaste. : en pl
  • US2091678A - Brake control mechanism : en
  • PL25250B1 - Device for cooling coke or similar distillation products from coal. : en pl
  • PL25271B1 - Rinsing method by mixing in a mixture of minerals. : en pl
  • US2091390A - Windshield wiper mechanism : en
  • US2091605A - Nursing bottle : en
  • US2091611A - Free and opposed piston motor compressor unit : en
  • DE649771C - Process for the production of purified capsaicin preparations : de en
  • FR817268A - Protective armature for piston rings : en fr
  • FR817394A - Improvements to devices intended for the practice of shooting : en fr
  • US2091638A - Circular knitting machine : en
  • FR817325A - Multiple mechanical pencils : en fr
  • GB471326A - Combined sales counter and automatic vending machine : en
  • ES143814A1 - A low frequency amplifier with negative feedback. : en es
  • FR817434A - Device with pathways or skis for motor cars : en fr
  • GB471587A - Improvements in and relating to electric transformers : en
  • GB471383A - Apparatus for stripping textile bobbins : en
  • GR6773B - EMYRIDOXYLON. : el en
  • DE649775C - Stand-by device for filter breathing apparatus : de en
  • CH192659A - Exhaust silencer for explosion engine. : en fr
  • CH195472A - Device for creating permanent hair waves. : de en
  • GB471202A - Improvements in or relating to fluxes for soldering : en
  • GB471207A - Improvements in or relating to the manufacture of electrical insulators for thermionic valves and the like : en
  • FR817253A - electric heating element : en fr
  • GB604184A - Improvements in and relating to gun and gun sight mountings for use in aircraft : en
  • US2091360A - Underframe : en
  • US2091578A - Method and apparatus for forming disks : en
  • US2091362A - Clutch control mechanism : en
  • CH192666A - Drive motor for electric vehicles. : de en
  • CA368356A - Electric motor speed control : en fr
  • CA368376A - Tappet : en fr
  • FR817207A - Device to aid direction-finding navigation : en fr
  • US2091499A - Pump : en
  • US2091615A - Process for the manufacture of polymerization products : en
  • FR817347A - Closing device : en fr
  • GB471216A - Process of treating tars, fuel oils and bitumens : en
  • US2091569A - Article of self bonded granular material and method of making the same : en
  • FR817228A - Auxiliary aiming device, particularly applicable to shooting against airplanes : en fr
  • FR817247A - Improved sealing of moving parts : en fr
  • GB471305A - Handle for overlay mattresses : en
  • GB471339A - Improvements in and relating to coin freed amusement and vending apparatus : en
  • PL25106B1 - Optical regulating device for cinematographic cameras. : en pl
  • PL25102B1 - A lock with several rotatable stop discs. : en pl
  • FR817344A - plate-shaped building elements and means for their assembly in order to construct buildings of any kind : en fr
  • GB471284A - An improved sewing-machine guard : en
  • DE649765C - Arrangement for increasing the control range of controllers for electrical machines : de en
  • DE649844C - Combined electric heating, cooking, baking and radiation device : de en
  • GB471134A - Improvements in or relating to processes for the production of artificial resins : en
  • GB471142A - Process for the manufacture of magnetic alloys of the iron-nickel-aluminium type : en
  • US2091274A - Heat radiating system : en
  • US2091759A - Chin rest : en
  • US2091785A - Hair-waving apparatus : en
  • US2091328A - Gear shifter for wringers : en
  • US2091691A - Glass composition : en
  • US2091749A - Metalworking machine : en
  • US2091801A - Temperature control : en
  • GB471356A - Improvements in material delivery mechanisms : en
  • FR817227A - Improvements to rising dam joints : en fr
  • FR817495A - Fottinger type torque transformer : en fr
  • FR817213A - Balancing mechanism for windows, panels and other vertically movable objects and device for their operation : en fr
  • GB471501A - Improvements in and relating to electron discharge devices : en
  • FR817274A - New application of combination locks on hinged closures, such as frames for ladies' bags : en fr
  • DE649855C - Process for the recycling of used films and celluloid strips : de en
  • GB471279A - Improvements in or relating to fuses in the caps of electric lamps and like devices : en
  • FR817388A - Tampons and other porous products, such as capsules, bandages, and process for their manufacture : en fr
  • FR817484A - Improvements to elastic cord holders in captive ball games and sports equipment : en fr
  • US2091620A - Gold washing machine : en
  • USD105845S - Design for a halter or similar : en
  • US2091860A - Power drill : en
  • DE649642C - Tarpaulin, in particular for the roof of motor vehicles : de en
  • DE649801C - Blade ring for Foettinger gearboxes of motor vehicles : de en
  • FR817282A - Large surface filter for all fluids : en fr
  • FR817430A - Camera comprising a base range finder and a device for adjusting the sharpness in depth : en fr
  • ES143692A1 - Method of vaporization of metals, metal alloys, metal compounds and similar substances difficult to vaporize. : en es
  • GB471485A - Improvements in electrically propelled road vehicles : en
  • US2091758A - Tens carrying means : en
  • IE14925L - Glasses for electric discharge devices : en
  • FR817542A - Combined servo-operated and automatic-operated safety electrical circuit breaker : en fr
  • PL25222B1 - A method of producing and wetting metal plates for flat printing. : en pl
  • FR817349A - Coffee processing process and resulting product : en fr
  • US2091724A - Operation step controller : en
  • CH192592A - Type lever drive for silent writing for typewriters. : de en
  • PL25085B1 - The method of producing phosphorus fertilizers. : en pl
  • CH192523A - Plant for the extraction of purified gases, in particular atmospheric air, by sucking them through the grown soil. : de en
  • CH192638A - Threadless pipe connection. : de en
  • FR817501A - Printing process with mordant dyes : en fr
  • GB471304A - Device for coupling and uncoupling toy vehicles running on rails : en
  • PL25069B1 - Cigarette tube. : en pl
  • PL25113B1 - Starting device for combustion engines. : en pl
  • US2091779A - Caisson machine : en
  • FR817384A - Bicycle : en fr
  • PL25076B1 - Specific weaving method, used especially for the production of flexible tubes and similar products. : en pl
  • PL25139B1 - Air motor for shock ramps and the way it works. : en pl
  • PL25305B1 - Electrical copper wire, insulated with vulcanized rubber. : en pl
  • US2091393A - Car door support : en
  • US2091859A - Means for attaching moldings and the like to channel-shaped supports : en
  • US2091876A - Fluid pressure generating means : en
  • DE649891C - Telegraph transmitter with uninterruptible battery switching to send out a sequence of double current pulses for each character to be transmitted : de en
  • GR6770B - PORTABLE - SUSPENSION PRESSURE PRESSURE FOR WATER CROWNS ETC. : el en
  • GB471261A - Improvements in or relating to flushing apparatus : en
  • DK53540C - Sack filling machine. : da en
  • GB471214A - Dry cells and processes for making the same : en
  • PL25136B1 - A device for feeding tobacco leaves to a slicer or other tobacco processing equipment. : en pl
  • PL25217B1 - Welded rail joint. : en pl
  • PL25280B1 - Fire tube steam superheater, especially for steam and marine boilers. : en pl
  • GB471237A - Process for the manufacture of halogenated pyridine derivatives : en
  • FR817215A - Improvements to protection devices for underground, telephone or other cables : en fr
  • FR817547A - Alloys for permanent magnets : en fr
  • US2091800A - Method of hydrogenating esters : en
  • US2091280A - Photographic cylinder printing apparatus : en
  • DE649645C - Glue application machine : de en
  • CY50A - Recovery of sulphur : en
  • DE649824C - Circuit arrangement for telephone extension systems : de en
  • CH192556A - Detergents and cleaning agents. : de en
  • FR817206A - Clutch device : en fr
  • DE649858C - Dismountable footwear : de en
  • GB471162A - Improvements relating to power transmission mechanism of tractors : en
  • PL25292B1 - Telecommunication cable, especially a high-frequency cable with one or more shielded groups of wires. : en pl
  • PL25269B1 - : en pl
  • FR817285A - Method and devices for the direct application of anti-friction alloys to machine parts subjected to a frictional action : en fr
  • PL25184B1 - The method of sintering finely ground materials. : en pl
  • US2091293A - Process fob introducing liquids into : en
  • US2091791A - Sealing gasket and securing device therefor : en
  • US2091827A - Shrubbery trimmer : en
  • DE649702C - Cinematographic recording and playback device : de en
  • DE649817C - Device for mixing flowing liquids or gases or gases with liquids : de en
  • DE649881C - Preparations for sulphurising wine and wine casks : de en
  • GB471367A - Improvements in or relating to display devices : en
  • CH192694A - Heel support. : de en
  • US2091501A - Power hacksaw grinding machine : en
  • US2091586A - Coaster brake : en
  • PL25215B1 - Film camera. : en pl
  • USRE20489E - Vacuum cleaner : en
  • US2091418A - Automatic lowering device : en
  • US2091513A - Method of digesting cellulosic material : en
  • DE649722C - Device for degassing feed water : de en
  • FR817203A - Improvements in thick electroplated coating processes : en fr
  • FR817364A - Improvements to the covers of the ignition switch boxes of automobile engines and industrial products : en fr
  • CH192664A - Safety device against liquid hammer in compressor systems in which a working medium describes a closed circuit. : de en
  • FR817359A - Improvements made to liquid pressure remote control systems : en fr
  • US2091316A - Corner leveling and finishing element for building construction : en
  • US2091332A - Glass cutting apparatus : en
  • US2091385A - Apparatus for forming concrete pipe : en
  • US2091842A - Induction voltage regulator : en
  • GB471192A - Improvements in or relating to machines for peeling vegetables and the like : en
  • DE649695C - Clamp coupling for connecting rods : de en
  • FR817469A - Dish brush and other uses : en fr
  • ES143231A1 - Perfections in and related to nickel alloys. : en es
  • FR817229A - Improvements to bypass regulation devices, hot gas heating systems : en fr
  • DE649875C - Cam switches controlled eccentrically with respect to one another and operated by means of a switching mechanism : de en
  • DE649809C - Lens drill : de en
  • FR817538A - Chain enhancements : en fr
  • CH192648A - Housing for rotary and roots compressors. : de en
  • CH192758A - Method for the preparation of an aminochrysen. : de en
  • FR817252A - Perfect connection between a propeller and its drive shaft : en fr
  • GB471421A - Improvements relating to mouth mirrors used in dental surgery : en
  • FR817209A - Process for the preparation of mixed esters of cellulose and new industrial products resulting therefrom : en fr
  • FR817336A - Selectors refinements : en fr
  • US2091425A - Hydraulically operated machine tool : en
  • US2091596A - Relief valve for pumps : en
  • DE649700C - Device for the removal of coolant and chips from the back and forth moving tables of milling machines or similar machine tools : de en
  • PL25226B1 - A device for dispensing liquids from vessels. : en pl
  • DE649660C - Rotary or pressure switch with a square or polygonal base recess and a ratchet wheel with tangentially oscillating switch contact springs : de en
  • DE649731C - Secondary draft regulator for firing systems : de en
  • GB471289A - Improvements in and relating to advertising means : en
  • FR817315A - Method and apparatus for density classification of powdered materials : en fr
  • BE422891A - : en
  • FR817239A - Anti-knock piston : en fr
  • DE649669C - Machine for forming artificial flower petals : de en
  • AU106916B2 - Improvements in and relating tothe heating or cooling of flat glass : en
  • ES143808A1 - A process for obtaining glass fibers and the like. : en es
  • DE649589C - Process for carrying out catalytic oxidations, especially for the oxidation of carbon monoxide : de en
  • FR817328A - Improvements to planetary gear reducers, in particular those for aircraft engines : en fr
  • US2091392A - Advertising device : en
  • FR817256A - Process for the manufacture of salts by base exchange using zeolite : en fr
  • FR817406A - Transfer inks for printing : en fr
  • FR817439A - Textile material : en fr
  • GB471293A - Improvements in and relating to the production of pictorial representations or designs : en
  • USD105862S - Design for a doll : en
  • USD105887S - Design for a dress : en
  • US2091830A - Shock absorber valve : en
  • USD105894S - Design for a walking stick : en
  • CH192658A - Spark plug. : de en
  • CH192726A - Device to open tied bags, packages and the like without damaging them. : de en
  • CA368428A - Figure toy : en fr
  • CA368436A - Spun yarn and fabric : en fr
  • CH192544A - Method and device for the production of printed bottle caps from material containing glutine. : de en
  • CH192701A - Process for the production of oligodynamically acting products. : de en
  • FR817338A - Detachable lens mount for cameras : en fr
  • FR817480A - Internal combustion engine cylinder liners : en fr
  • FR817366A - Cable drum shaped carcass weld converter : en fr
  • USD105906S - Design for a spoon or other article : en
  • AU309136A - Improvements in or relating to phase and frequency modulated carrier wave signalling systems : en
  • US2091302A - Picker : en
  • US2091431A - conrad : en
  • FR817410A - Skate : en fr
  • FR817549A - Printing telegraph receiving apparatus : en fr
  • US2091319A - Liquid level indicator : en
  • CH192628A - Pressing tool for the production of the lid of sheet metal cans or similar containers. : de en
  • US2091296A - Eyeglasses : en
  • PL25157B1 - Detachable fastener for furniture parts or buildings. : en pl
  • DE649676C - Sheet delivery device : de en
  • DE649803C - Coupling for double sash window : de en
  • US2091729A - Hydraulic jack : en
  • CH192680A - Electrical monitoring relay. : de en
  • DE649897C - Method for measuring the intensity of fast, artificially generated cathode rays : de en
  • CA368384A - Safety staging : en fr
  • US2091871A - Method of welding alloys to a base metal : en
  • US2091329A - Centrifugal separator : en
  • US2091554A - Composite refractory body : en
  • US2091688A - Sound reproducing apparatus : en
  • US2091732A - Muffler connecter : en
  • DE649682C - High frequency receiver with automatic control of the selectivity : de en
  • PL25253B1 - A method of electrolytically treating zipper cells and an apparatus for carrying out the method. : en pl
  • US2091301A - Supervisory control system : en
  • US2091823A - Agricultural machinery : en
  • DE649599C - Device for shutting down internal combustion engines when there is a lack of oil : de en
  • CH192582A - Glue for woodwork. : de en
  • DE649794C - Lubricating device, consisting of a high-speed pump for circulating lubrication and a low-speed group lubrication pump : de en
  • DE649828C - Release device for holding devices under tension : de en
  • AU101891B2 - Improvements in and connected with veneer presses andthe like : en
  • CA368379A - Internal combustion engine : en fr
  • PL25073B1 - Charging furnace with bottom gas combustion. : en pl
  • US2091581A - Hydrocarbon fuel burning system and apparatus : en
  • PL25278B1 - A method of producing a durable active oxygen-containing laundry detergent. : en pl
  • FR817456A - Aircraft upgrades : en fr
  • CA368438A - Spark plug : en fr
  • US2091484A - Oil seal : en
  • US2091890A - Can : en
  • DE649606C - Device for extracting with liquids : de en
  • PL25088B1 - The method of producing phosphorus fertilizers. : en pl
  • US2091409A - Clutch mechanism : en
  • PL25233B1 - Two-stroke valveless combustion engine. : en pl
  • US2091358A - Water insoluble azo dyestuffs : en
  • US2091427A - Rooter : en
  • US2091836A - Chain : en
  • US2091504A - Glass building blocks and method of making them : en
  • USD105920S - Design tdk a dress : en
  • PL25178B1 - Device for deflecting a gaseous stream flowing through an opening to another gas medium. : en pl
  • US2091275A - Light projection system and projection lens therefor : en
  • US2091736A - Surface broaching machine : en
  • US2091799A - Titanium containing precipitates : en
  • FR817270A - Aircraft upgrades : en fr
  • AU299636A - Improved apparatus for playing parquet billiards or the like : en
  • CA368392A - Vehicle steering mechanism : en fr
  • CH192587A - Process for softening raw water. : de en
  • CH192612A - Seismograph. : de en
  • PL25156B1 - A method of producing a-cellulose. : en pl
  • US2091288A - Drafting and lettering machine : en
  • USD105891S - Design for a range : en
  • FR817524A - Device for the manufacture of thin-walled tubes with longitudinal joint : en fr
  • CH192522A - Hot water supply system. : de en
  • US2091622A - Soot blowing means for air preheaters : en
  • US2091725A - Manufacture of artificial yarn : en
  • CA368327A - Hydrocarbon oil extraction : en fr
  • US2091249A - Method of and apparatus for working materials : en
  • CH192625A - Chronograph watch movement. : en fr
  • CH192516A - Parquet floor. : de en
  • FR817330A - : fr
  • FR817466A - Removable soap dish : en fr
  • GB471382A - Apparatus and process for the treatment of textile yarns : en
  • US2091407A - Thread controlling mechanism : en
  • AU101884B2 - Improved decorative slab or tile and method of making same : en
  • CA368427A - Spring for cord plug contacts : en fr
  • CH192655A - Magneto electric ignition. : en fr
  • FR817302A - Sprinkler container for powdery materials : en fr
  • FR817440A - Belt improvements : en fr
  • GB471272A - Composition for coating aircraft to prevent ice formation : en
  • GB471307A - Improvements in and relating to builders' drying stoves : en
  • CA368452A - Rotary filter : en fr
  • GB471251A - Improvements in chart recording apparatus for use with automatic continuous weighing and measuring machines : en
  • PL25141B1 - Ring-shaped strip or wire core, especially for load coils of long-distance telecommunication cables. : en pl
  • CH192509A - Liquid fuel burner for heating plantations. : en fr
  • FR817348A - Device intended to straighten, in the field, strips of bent strip outside tolerances : en fr
  • FR817313A - Process for bleaching cotton fabrics and fibers of a similar nature : en fr
  • DE649672C - Process and plant for the evaporation of liquid : de en
  • CA368399A - Compression ignition engine : en fr
  • DE649703C - Viewfinder arrangement for cinematographic recording cameras : de en
  • DE649733C - Buoyancy bench for making conical necks on bottles : de en
  • SU51591A1 - The way to prevent sleepers from cracking : en ru
  • FR817507A - Plant protection device : en fr
  • PL25193B1 - Lid for the teapot. : en pl
  • FR817426A - Heat pump, in particular for central heating systems : en fr
  • US2091498A - Device for assisting steering : en
  • USD105903S - Design for a glove : en
  • FR817238A - Support device with automatic centering and backlash for motor car brake shoes and others : en fr
  • FR817441A - Shoe laces : en fr
  • US2091366A - Transformer : en
  • US2091460A - Bottle closure : en
  • GB471336A - Improvements in automatic stokers : en
  • FR817526A - Air-blown open-air arc circuit breaker : en fr
  • GB471297A - An improved method of copying additive colour cinematograph films : en
  • GB471510A - Improvements in and relating to aircraft having rotative sustaining-means : en
  • DK53524C - Hydraulically actuated Fuel Injector for Internal Combustion Engines. : da en
  • FR817472A - Level controller and automatic feeder for steam boilers : en fr
  • GB471177A - Improvements in exhaust discharge arrangements for internal combustion engines : en
  • GB471185A - Improvements in or relating to arrangements for controlling a cathode ray tube : en
  • GB471188A - Improvements in or relating to the manufacture of chlorinated hydrocarbons : en
  • IE14552L - Electric discharge lamps : en
  • US2091451A - Convertible internal combustion engine and compressor : en
  • US2091634A - Apparatus for testing staybolts : en
  • PL25288B1 - A method of obtaining starting protein and adhesive materials for technical purposes as a by-product in the separation of oil from oily plant seeds. : en pl
  • CH192548A - A method of manufacturing an elastic yarn and elastic yarn obtained by this method. : en fr
  • US2091412A - Internal combustion engine : en
  • US2091494A - Glass working machine : en
  • US2091526A - Film handling apparatus : en
  • US2091755A - Apparatus for cooling and dispensing beer : en
  • PL25301B1 - A method of purifying or sorting a continuous process of heterogeneous liquid mixtures, especially paper pulp, and an apparatus for carrying out the method. : en pl
  • FR817242A - Improvements to shock absorbers used more particularly in parachutes : en fr
  • FR817513A - Gooseneck frame press : en fr
  • US2091559A - Rubber dispersions and their preparation : en
  • DE649715C - glasses : de en
  • FR817273A - Soap enhancements : en fr
  • DE649847C - Coated pad with adhesive covering only part of the pad width : de en
  • PL25262B1 - Method for producing concentrated nitric acid. : en pl
  • DE649604C - Process for promoting the growth and activity of microorganisms : de en
  • FR817272A - Valve with self-rotating device for combustion or internal combustion engines : en fr
  • ES143795A1 - Mechanism of progressive change of speeds. : en es
  • FR817373A - Process for obtaining homogeneous milling products : en fr
  • FR817465A - Improvements and Changes to Agriculture Rollers : en fr
  • US2091651A - Partition holder for luggage carriers : en
  • PL25220B1 - Spiral turbine with adjustable rotor blades. : en pl
  • US2091481A - Alkylated and aralkylated polyaminoanthraquinones : en
  • US2091936A - Optometroscope : en
  • ES143826A1 - Improvements in container wagons. : en es
  • GB471136A - Improvements in or relating to internal fittings for boxes or like containers, and to methods of and apparatus for producing such fittings : en
  • FR817367A - Improvements to padding materials : en fr
  • GB471482A - Improvements in the manufacture and production of low boiling liquid hydrocarbons from the gases obtained in the dry distillation of fuels : en
  • FR817278A - New musical typography : en fr
  • GB471381A - Improvements relating to level flight control for aircraft : en
  • DE649658C - Control device for steam or gas turbines : de en
  • FR817214A - Advanced shock absorber : en fr
  • FR817374A - Process for manufacturing ethylene polymers : en fr
  • FR817246A - Reinforced concrete tanks suitable for liquids immiscible with water, especially hydrocarbons : en fr
  • GB471591A - Improvements in or relating to the manufacture of coated and impregnated textile materials : en
  • FR817279A - Optical inverter : en fr
  • GB471509A - Improvements in and relating to aircraft having rotative sustaining-means : en
  • USD105851S - Design for a shoe or similar article : en
  • PL25244B1 - A method of producing items from porous rubber. : en pl
  • USD105890S - Design for a boot : en
  • US2091598A - Article of manufacture : en
  • US2091641A - Method and apparatus for pressure treatment : en
  • US2091731A - Tank : en
  • US2091793A - Ventilator window : en
  • US2091880A - Binding post : en
  • FR817298A - Advanced pliers : en fr
  • GB471344A - Improvements in or relating to apparatus for dispensing measured quantities of liquids : en
  • FR817340A - Process for the preparation of testosterone and its esters : en fr
  • FR817409A - Process for preparing dyes : en fr
  • FR817381A - Manufacturing process of sulphides, selenides and tellurides of alkali metals : en fr
  • FR817355A - Shredder for the preparation of asbestos fibers and the like : en fr
  • CH192606A - Climbing device on skis. : de en
  • SU51619A1 - Device for remote control of conveyor sluice doors : en ru
  • US2091345A - Accelerator for the vulcanization of rubber : en
  • FR817223A - Apparatus used to determine the level of carbonic acid contained in a gas : en fr
  • FR817341A - Process for the production of films : en fr
  • CA368342A - Polishing machine : en fr
  • CA368393A - Vehicle steering mechanism : en fr
  • DE649688C - Method for attaching crystal windows to vessels : de en
  • DE649843C - Process for the elimination of the oxygen produced by burning in discharge tubes with Wehnelt cathodes and essentially metal vapor filling : de en
  • GB471360A - Improvements relating to photographic reproduction : en
  • US2091438A - Hypodermic needle : en
  • DE649634C - Process for the regulation of halogen ions in photographic preparations : de en
  • BE422449A - : en
  • CA368422A - Printing process : en fr
  • US2091914A - Periodically acting spark generating toy : en
  • US2091941A - Circuit breaker : en
  • AU368437A - Improvements in and relating tothe heating or cooling of flat glass : en
  • CA368435A - Spun yarn : en fr
  • GB471288A - Improvements in or relating to machines for sewing on buttons : en
  • GB471668A - Improvements in and relating to the manufacture of sulphur : en
  • DE649670C - Extension of the route with pit punches which are inserted into a concrete column : de en
  • CA368338A - Valve : en fr
  • FR817241A - Improvements to bottle washing machines or the like : en fr
  • US2091807A - Toilet article : en
  • US2091927A - Roof drain : en
  • GB471219A - Improvements in transfers : en
  • PL25099B1 - Split wheel for vehicles. : en pl
  • AU101879B2 - Improved means for carbonating water and beverages : en
  • AU101965B1 - An improved tempered glass article and method of and apparatus for making same : en
  • GB471146A - Improvements in or relating to anti-freeze devices for motor cooling systems : en
  • GB471259A - Improvements in or relating to machines for forming and fixing electrical contacts : en
  • US2091266A - Vehicle door latch : en
  • US2091510A - Motor cooling fan and blower : en
  • US2091265A - Flexible noncollapsible tubing : en
  • USD105864S - Design for : en
  • ES143812A1 - A procedure to obtain elemental sulfur dioxide sulfur and gases that contain it. : en es
  • FR817320A - Multi-piece crankshafts : en fr
  • DE649684C - Device for operational disconnection of a consumer connected to a high-voltage network by means of a disconnector : de en
  • US2091312A - Automatic lipstick holder : en
  • PL25299B1 - Machine for folding linen. : en pl
  • GB471405A - Illuminating arrangements for indicating devices : en
  • DE649845C - Oil firing for ship boilers : de en
  • DE649890C - Air heating system for several rooms, especially for the compartments of railway vehicles : de en
  • DE649728C - Mains coupling converter, preferably of high power, consisting of a synchronous machine and an asynchronous machine mechanically coupled to it : de en
  • FR817396A - Speaker system : en fr
  • FR817316A - Automatic device against theft for all motor vehicles : en fr
  • FR817424A - Rubber heel and sole : en fr
  • FR817454A - Process of gravity concentration of valuable mineral products, in particular hard coal : en fr
  • US2091424A - Fuse : en
  • US2091681A - Drive suitable for remote control : en
  • GR6765B - INVASION CONTROL CONDITIONER. : el en
  • DK53518C - Vent valve for Petroleum steam cookers. : da en
  • DE649796C - Protective sleeve for making a soldered or welded connection between the ends of rods, cables or wires : de en
  • GB471241A - Improvements in sack-filling devices : en
  • GB471308A - Improvements in and relating to railway trucks : en
  • GB471737A - Improvements in and relating to electric oscillation generators : en
  • CH192578A - Process for the preparation of 2-amino quinizarin. : de en
  • DE649611C - Divisible pantograph shoe with exchangeable sliding sole : de en
  • DE649654C - Slot bunker arrangement with several bunker cells : de en
  • US2091417A - Sulphur dyestuff preparations : en
  • US2091588A - Babbitting apparatus : en
  • USD105897S - Design fok : en
  • AU487036A - An improved tool for driving fencing and like posts : en
  • CA368322A - Illuminated display device : en fr
  • CH192552A - Equipment on automatic two-cylinder stocking and sock circular knitting machines for the production of rows of separating stitches and pearl eyes on the edges of the knitted fabric. : de en
  • CH192742A - Mountain elevator. : de en
  • DE649632C - Multiple riveting machine with insertable anvil for riveting cases : de en
  • GB471343A - A rotary pump for pumping adhesive fluids : en
  • US2091740A - Substance for stopping runs in hose : en
  • BE422940A - : en
  • CA368380A - Lens slit for sound recording : en fr
  • CH192653A - Control method for internal combustion engines. : de en
  • AU379936A - Improved means for carbonating water and beverages : en
  • CH192566A - Process for the continuous production of coronary casings from plastic-kneadable fiber mass of animal origin. : de en
  • CH192596A - Device for attaching a Bowden cable to cameras equipped with a manual sliding element, in particular narrow film recorders. : de en
  • PL25115B1 - A method of burning peat on mobile chain grates used for burning coal, and a device for grinding peat. : en pl
  • PL25221B1 - A method of producing an elastic fabric. Patent dependent on patent No. 24632. : en pl
  • US2091629A - Method of treating whey : en
  • CH192551A - Hemstitch sewing machine. : de en
  • CH192640A - Device for setting roller bearings, in particular self-aligning roller bearings. : de en
  • US2091270A - Clutch mechanism : en
  • CA368442A - Indicating panel : en fr
  • AU501336A - Improvements in means for supporting spring floors : en
  • CH192662A - Method and device for feeding steam generators. : de en
  • GB471483A - Improvements in the manufacture and production of products suitable as assistants forthe textile, leather, lacquer and like industries : en
  • AU526136A - Process forthe production of hydrogen peroxide : en
  • PL25254B1 - Sedimentation tank for wastewater treatment. : en pl
  • AU101869B2 - Improvements in means for supporting spring floors : en
  • CH192771A - Device for holding workpieces, in particular for the production of carpentry work. : de en
  • CH192649A - Multi-stage rotary compressor. : de en
  • AU101894B2 - Improved flooring : en
  • CH192642A - Removable connector for tubes of deformable material such as rubber. : en fr
  • CH192667A - Method for storing and subsequently releasing electrical energy and apparatus for carrying out the same. : de en
  • CH192716A - Device for modulating carrier wave transmitters. : de en
  • US2091350A - Bottle stopper : en
  • USD105874S - Design for a chest : en
  • DE649679C - Device for aligning and soldering typewriter types : de en
  • FR817306A - Riveting process, especially applicable to thin sheets used in aircraft construction : en fr
  • FR817403A - Device allowing vehicles to travel safely on snow, ice, etc. : en fr
  • US2091474A - Edge clinching mechanism : en
  • PL25229B1 - Device for actuating the brake of motor vehicles. : en pl
  • US2091286A - Control unit for line casting and composing machines : en
  • US2091666A - Means for heat treatment of metal : en
  • BE422669A - : en
  • CH192707A - Method for extinguishing incendiary bombs and device for carrying out the method. : de en
  • CH192570A - Process for precipitating alumina from solutions of lime aluminates. : en fr
  • GB471282A - Improvements in or relating to hot water boilers : en
  • CA368448A - Spark plug : en fr
  • CH192708A - Coin box. : de en
  • CH192745A - Melting furnace for the production of glass fiber. : de en
  • CA368354A - Filter : en fr
  • FR817289A - Fuel injection device for diesel hammers : en fr
  • US2091462A - Adjusting means for thresher feeder carriers : en
  • US2091815A - Machine for dimensioning and sorting machined articles : en
  • US2091522A - Seam or defect detector for sheet material : en
  • US2091719A - Current interrupter for electric welding : en
  • CH192508A - Mill for gentian roots and fruit. : de en
  • CA368364A - Slip cover container : en fr
  • DE649800C - Friction clutch with gradual engagement controlled by hand and centrifugal force : de en
  • US2091612A - Apparatus for the production of artificial thread : en
  • FR817517A - Muffler for internal combustion or combustion engine : en fr
  • GB471249A - Improvements in means and apparatus for securing and releasing change wheels : en
  • US2091382A - Locking means for drop front cabinets : en
  • US2091347A - Revolving toy : en
  • GB471197A - Improvements in the cutters of cultivators : en
  • US2091251A - Printing chase : en
  • US2091534A - Deformation recording apparatus : en
  • AU23137A - A method of intensifying fruit or vegetable juice : en
  • CA368346A - Iron and steel article coating composition : en fr
  • CH192656A - A method of manufacturing a magneto electric ignition, and magneto obtained by means of this method. : en fr
  • DE649839C - Device for measuring alternating voltage peaks or the degree of modulation using a peak voltmeter : de en
  • PL25077B1 - Method of separating technical products. : en pl
  • PL25168B1 - A method of producing canvas footwear partially covered with rubber overlays. : en pl
  • CH192684A - Discharge tube, which is suitable for generating electrical oscillations under the influence of a magnetic field. : de en
  • GB471322A - Improvements in or relating to washing coppers and gas-heated boilers : en
  • DE649626C - Device for drilling pressurized lines : de en
  • GB471368A - Improvements relating to the propulsion of aircraft : en
  • GB471361A - Improvements in and relating to systems of electric motor control : en
  • FR817496A - Gear shift mechanism : en fr
  • GB471329A - Improvements in or relating to coin freed mechanism for turnstiles and the like : en
  • US2091485A - Oil and dirt seal : en
  • PL25132B1 - Apparatus for reproducing images on television receivers. : en pl
  • US2091544A - Method of stopping and repairing leaks in gas mains : en
  • US2091642A - Vacuum cleaner : en
  • CH192543A - Grill. : de en
  • CH192676A - Device for voltage regulation at the star point of three-phase transformers. : de en
  • DE649790C - Pipe clamp for pipes that cross at any angle : de en
  • CH192780A - Process for the preparation of a substituted pyridine-o-dicarboxamide. : de en
  • US2091446A - Railway draft appliance : en
  • FR817486A - Improvements to hunting cartridges : en fr
  • GR6977B - AUTOGRAPHIC INSTRUMENT OF MEASUREMENT OF EACH VOLUME AND DENSITY OF FLUID FOUND INTO TANKS. : el en
  • CH192743A - Arrangement for switching from motors fed by grid-controlled converters and set up for energy recovery. : de en
  • PL25293B1 - The method of making lice. : en pl
  • US2091449A - Frictionally synchronized positive drive clutch : en
  • US2091839A - Electric heater : en
  • PL25116B1 - h6fa, k1-fo? High-performance two-stroke internal combustion engine with additional charging of the working cylinder with compressed air. : en pl
  • US2091434A - Foot supporter : en
  • US2091652A - Motor vehicle : en
  • USD105913S - Design for a dress : en
  • PL25270B1 - The way of making rubber items slippery. : en pl
  • US2091924A - Ignition timing means : en
  • DE649827C - Jet pump : de en
  • DE649860C - Medium shaft magazine, especially for self-loading weapons : de en
  • US2091943A - Production of so from acid sludge : en
  • PL25140B1 - Piston extinguisher. : en pl
  • US2091713A - Developer : en
  • AU204136A - Improvements in and relating to protective devices for television receivers : en
  • DE649707C - Locking arrangement for the breech block of a recoil loading weapon : de en
  • DE649545C - Device for gluing a strip of paper around the open edge of folded printed matter, in particular newspaper copies : de en
  • CH192580A - Process and device for the production of carbon black. : de en
  • CH192650A - Piston pump. : de en
  • GB471488A - Improved brake operating means for aircraft : en
  • GB471357A - Improvements in or relating to neon or like discharge tube signs : en
  • GB471228A - Improvements in or relating to wire coiling machines : en
  • GB471312A - Improvements in and relating to apparatus including relatively movable members the contacting surfaces of which are adapted to cooperate to form a fluid-tight joint : en
  • US2091325A - Production of casein glue and casein glue preparation : en
  • GB471498A - Improvements in and relating to skirts and like garments : en
  • GB471505A - Method and apparatus for the heating of domestic or industrial premises : en
  • FR817533A - Apparatus for expanding tubular rubber parts : en fr
  • US2091492A - Rotary pump for corrosive liquid : en
  • GB471427A - Improvements in electrically actuated valves : en
  • FR817537A - Improvements to television receiver systems : en fr
  • GB471193A - Improvements in electric signalling systems : en
  • GB471372A - Valve spring compressor : en
  • DE649649C - Ring twisting machine : de en
  • PL25097B1 - Silage pit. : en pl
  • US2091317A - Gear tooth curve : en
  • US2091458A - Adjustable handgrip : en
  • US2091935A - Insecticides and fungicides : en
  • FR817327A - Improvements in speed control processes and apparatus for motor vehicle speed control systems : en fr
  • FR817522A - Ink conductor for reservoir pen holder : en fr
  • GB471271A - Improvements in vacuum braking apparatus : en
  • AU101854B2 - Improvements relating tothe manufacture of flexible transparent sheets : en
  • CH192663A - Device for the automatic discharge of liquid from the pressure line of continuous centrifugal pumps, in particular boiler feed pumps, with the pressure line shut off. : de en
  • US2091680A - Jar : en
  • US2091720A - Shoe counter : en
  • CA368323A - Railway car brake arrangement : en fr
  • CH192741A - Switching device. : de en
  • DE649808C - Stamp for inner bores : de en
  • FR817458A - Improvements to piston machines for gaseous fluids, in particular to compound machines : en fr
  • GB471295A - Improvements in gas washers for generator gases and the like : en
  • DE649738C - Four-stroke internal combustion engine with slide control : de en
  • GB471302A - Electric lamp-sockets : en
  • GB471353A - Improvements in or relating to tensioning devices for band conveyors : en
  • FR817449A - Combined operating and locking device for rotating windows : en fr
  • GB471238A - Improvements in or relating to grips for handles of golf clubs, cricket bats, hockey sticks or other shaft-like bodies : en
  • GB471399A - Improvements in or relating to a method and apparatus for detecting radio signals : en
  • GB471411A - Improvements in and relating to electric discharge tubes : en
  • CH192510A - Heater for plantations. : en fr
  • CA368437A - Shot-gun cartridge : en fr
  • AU377237A - Improvements in headlamps for automobiles : en
  • CA368461A - Sound conducting apparatus : en fr
  • DE649343C - Flow brake for high-speed vehicles : de en
  • US2091889A - Bearing for well drills : en
  • FR817351A - Threaded parts tester : en fr
  • GB471286A - Improvements in television synchronisation : en
  • USD105930S - Design fob a dress : en
  • GB471285A - Improvements in or relating to means for generating synchronising signals in the transmission of television and the like : en
  • DE649719C - Method of making boot irons : de en
  • CA368372A - Metal container : en fr
  • CH192777A - Process for the preparation of a substituted pyridine-o-dicarboxamide. : de en
  • AU101858B2 - Improvements in or relating to lubricants : en
  • DE649764C - Arrangement for controlling electrical machines by means of grid-controlled discharge paths : de en
  • US2091284A - Method of curing forage crops : en
  • USD105910S - Design fob a textile fabric : en
  • CH192593A - Typewriter. : en fr
  • CH192711A - Circuit arrangement for recording telephone messages. : de en
  • CH192568A - Device for treating moldings made from fruit jelly pastes. : de en
  • CH192571A - A process for the preparation from ethyl alcohol of a combustible volatile liquid containing ether. : en fr
  • CA368398A - Sulphur recovery : en fr
  • CH192670A - Device for closing and interrupting electrical circuits. : de en
  • AU296236A - Improvements in or relating to knitting machines andin the production of fabric thereon : en
  • US2091402A - Agitator mechanism for washing machines : en
  • US2091623A - Filtering press : en
  • PL25152B1 - Automatic firearms, especially for overhead ships. : en pl
  • CH192688A - Device for darkening street lights. : de en
  • AU340136A - Improvements in or relating to sound reproducing apparatus : en
  • CH192555A - Process for the production of a stable alkaline solution of salts of the leuco bases of vat dyes to be used in vat dyeing. : de en
  • US2091428A - Guiding floating and cementing device for well casings : en
  • US2091539A - Mineral dye and method of making same : en
  • BE422433A - BRA OR SIMILAR UNDERWEAR : en fr
  • CH192719A - Variable self-induction with a fixed coil and at least one rotatable coil mounted therein. : de en
  • CH192618A - Device for indicating the average speed of a vehicle. : en fr
  • AU101845B2 - Improved method of and means for teaching handwriting andthe like : en
  • US2091532A - Mixing device : en
  • AU337036A - Method forthe production of improved cellulose fabrics : en
  • CH192564A - Welding blade. : de en
  • PL25147B1 - : en pl
  • US2091662A - Coin, bill, and card case : en
  • BE422510A - : en fr
  • CA368441A - Tool key : en fr
  • CH192521A - Snow blower. : de en
  • FR817245A - Metal fishing rod : en fr
  • CH192567A - Preservation container. : de en
  • FR817411A - Device for transmitting a pressurized fluid : en fr
  • GB471223A - Process for the production of metallic zinc : en
  • PL25249B1 - Device for the resilient support of organs, in particular for fibers in electrical discharge devices. : en pl
  • US2091461A - Scraper for boiler and condenser tubes : en
  • US2091556A - Coin chute for coin collectors : en
  • US2091710A - Pricing device : en
  • US2091587A - Revolving grate : en
  • AU376636A - Improvements in bearings : en
  • CA368430A - Valve : en fr
  • US2091849A - Electric heater : en
  • USD105846S - Design for a halter or : en
  • US2091682A - Instrument mounting for motorcycles : en
  • AU101878B2 - Manufacture of improved acoustic plaster : en
  • CA368370A - Metal container : en fr
  • CH192572A - Process for the preparation of thioformamide. : de en
  • PL25125B1 - A method of producing crepe effects on fabrics made of vegetable fibers. : en pl
  • US2091790A - Sprinkler head : en
  • CA368439A - Transformer for welding : en fr
  • AU343636A - Television transmission method : en
  • CH192545A - Container spout that accelerates the outflow of liquids. : de en
  • DE649766C - Overcurrent protection device for capacitors in networks with changing shape of the voltage curve : de en
  • CH192546A - Tap. : de en
  • PL25283B1 - Machine for steaming fabrics. : en pl
  • CH192613A - Device on angle measuring instruments, for example on theodolites, for measuring the direction of a moving target at a specific moment. : de en
  • US2091447A - Cooking stove : en
  • US2091711A - Medium temperature carbonization of coal : en
  • US2091272A - Ophthalmic mounting : en
  • US2091754A - Shortening creamer : en
  • CH192748A - Washing and cleaning agents. : de en
  • CH192720A - Fusible link detector. : de en
  • FR817474A - Steam generator with forced water circulation : en fr
  • PL25165B1 - Method of water and sewage treatment. : en pl
  • US2091521A - Insulator testing device : en
  • US2091490A - Lamp assembly : en
  • USD105854S - Design for a shoe ob similar article : en
  • US2091639A - Process for the melting, refining, and casting of magnesium and its alloys : en
  • US2091685A - Buckle : en
  • PL25130B1 - : en pl
  • BE422801A - : en fr
  • FR817212A - evaporator, more especially for sweet juice : en fr
  • GB471410A - Improvements in or relating to means for varying the cylinder compression ratio of internal combustion engines : en
  • US2091565A - Preparation of tertiary butyl phenol : en
  • US2091411A - Internal combustion engine : en
  • DK53534C - Bicycle lock with adjustable keys. : da en
  • GB471242A - Improvements in or relating to apparatus for metering the revolutions of an axle or shaft : en
  • PL25207B1 - Gas generator. : en pl
  • US2091776A - Split-checking iron : en
  • US2091932A - Mine trolley wire guard : en
  • US2091782A - Lamp focusing device for electric fixtures : en
  • GB471255A - Improvements in collapsible gates : en
  • FR817550A - heat-transmitting element and method for the manufacture and assembly thereof : en fr
  • GB471311A - Improvements in fastening and anti-creep devices for railway rails : en
  • FR817354A - Improvements made to ball or roller bearings : en fr
  • GB471389A - Improvements in the manufacture and production of pyc-alkyl-1(n).2-pyrazolo-anthraquinones : en
  • GB471477A - Improvements in non-slipping attachments for trestles, steps and ladders : en
  • GB471257A - Improvements in and relating to electrical plugs containing fuses : en
  • GB471499A - Improvements in or relating to electric transformers : en
  • FR817446A - Improvements to breathing apparatus for individual use : en fr
  • DE649678C - Typewriter foot : de en
  • GB471303A - Improvements in starters for internal combustion engines : en
  • US2091656A - Motor vehicle testing apparatus : en
  • US2091794A - Golf club : en
  • US2091838A - Liquid dispenser : en
  • CH192700A - Process for the preparation of parabenzylaminobenzenesulfamide. : en fr
  • GB471494A - Improvements in copying telegraph systems : en
  • CY51A - Recovery of sulphur : en
  • DE649888C - Device for compacting road surfaces from a concrete mass containing coarse aggregates : de en
  • FR817536A - Ship ventilation device : en fr
  • GB471433A - Improvements in or relating to the manufacture of safety fuze : en
  • US2091547A - Internal combustion engine with fuel injection : en
  • US2091920A - Electrolytic condenser : en
  • PL25241B1 - A method for increasing the winging rails in a cross and a tool for carrying out the method. : en pl
  • FR817512A - Roll to print by hand : en fr
  • FR817468A - End piece for handles of leather goods : en fr
  • US2091679A - Automobile engine mounting : en
  • FR817502A - Process for the preparation of water-free metal halides : en fr
  • US2091525A - Film reel : en
  • FR817485A - Suction massage instrument : en fr
  • US2091728A - Key release for calculating machines : en
  • GB471420A - Improvements in or relating to the production of circular knitted elastic fabric and to articles of wearing apparel : en
  • DE649742C - Process for the production of hollow poppet valves with a heat-equalizing filling : de en
  • GB471273A - Improvements in spray producers particularly for use in coolingtowers or structures for cooling water and other liquids : en
  • GB471209A - Improvements in or relating to washer boxes for coal and the like : en
  • FR817322A - Cooling system for internal combustion engines : en fr
  • USD105905S - Design for a projector : en
  • FR817363A - Method and device for imparting high porosity to liquid slag upon solidification : en fr
  • DE649778C - Netzoelspritzgeraet : de en
  • FR817427A - Creel for warping machines : en fr
  • FR817505A - Flexible inverter : en fr
  • GB471233A - Straight bar knitting machine : en
  • PL25105B1 - E04 6 / Pflfc Railroad joint. : en pl
  • CA368397A - Vehicle suspension : en fr
  • FR817321A - Process for the production of chemical solutions capable of rendering non-flammable strands, fabrics, paper, cardboard, woody fibers and wood which are soaked therein : en fr
  • PL25255B1 - Pupina coil box. : en pl
  • GB471183A - Improvements in and relating to cross-cut saws : en
  • GB471414A - Improvements in or relating to brassieres : en
  • FR817514A - Surfacing device : en fr
  • FR817515A - Device designed to reduce swimmer's fatigue and make his movement faster : en fr
  • FR817260A - Machine for forging axles or bent shafts and similar mechanical parts : en fr
  • GB471178A - Improvements in or relating to stocking, more particularly to stockings made by circular knitting : en
  • GB471212A - Operating device for camera guns : en
  • GB471316A - Improvements in sirens : en
  • FR817428A - Carburetor fitted to internal combustion engines and having a diffuser with variable flow cross-section : en fr
  • FR817478A - Improvements made to electric discharge tubes and their manufacturing process : en fr
  • FR817479A - Heating process for melting furnaces for glass, silicates and other difficult to melt materials : en fr
  • FR817503A - Surfaces with high secondary electron emission and method of making such surfaces : en fr
  • GB471337A - Improvements in thermionic valve relaxation oscillation generator circuits : en
  • FR817324A - Device for recording acoustic oscillations : en fr
  • GB471359A - Improvements in means for and methods of forming mosaic electrodes for use in electric discharge tubes : en
  • DK53526C - Combined Electromagnetic and Mechanical Regulator for Power Machines with Connected Electric Generator. : da en
  • CH192779A - Process for the preparation of a substituted pyridine-o-dicarboxamide. : de en
  • GB471176A - Improvements in electric condensers : en
  • US2091704A - Detergent composition : en
  • US2091847A - Clothes wringer : en
  • US2091437A - Conversion of hydrocarbon oil : en
  • US2091298A - Golf club carrier or bag : en
  • US2091933A - Display rack : en
  • US2091338A - Razor : en
  • US2091852A - Construction for joining metallic and nonmetallic members : en
  • CA368460A - Sound conducting apparatus : en fr
  • USD105896S - Design for a stamping tool or the : en
  • ES143813A1 - A system of asymmetric conductivity electrodes. : en es
  • US2091463A - Water-soluble basic triphenyl-methane dyestuffs : en
  • US2091891A - Assembling of bottle seals and strands : en
  • US2091373A - Acetals of : en
  • GB471589A - Improvements in apparatus for manufacturing pottery ware : en
  • FR817259A - Improvements to telephone devices : en fr
  • ES143519A1 - PROCEDURE FOR OBTAINING A GLOSSY CRYSTAL PAINT : en es
  • GB471294A - Improvements in public lighting apparatus : en
  • ES143816A1 - A process of low temperature hydrogenation of carbonaceous solid materials. : en es
  • ES143821A1 - Improvements in the construction of tires. : en es
  • FR817399A - Calendering machine equipped with helical rollers for compressing cylindrical hollow bodies : en fr
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  • DE649694C - Gas stove with baking and roasting oven : de en
  • DE649826C - Laminated iron core for inductors in telemetry technology : de en
  • DE649614C - Power transformer : de en
  • DE649650C - Lubricating device for the rings and runners of ring spinning and ring twisting machines : de en
  • DK53512C - Electric Bulb or Discharge Tube. : da en
  • US2091918A - Insulating material : en
  • DE649717C - Zipper : de en
  • FR817499A - Razor blade : en fr
  • GB471227A - Improvements in or relating to mechanism for applying windings to flexible rods, for example fishing rods or the like : en
  • DE649628C - Device for the implementation of colored light phenomena in tones : de en
  • DE649691C - Process for the production of oxide barrier photocells : de en
  • FR817254A - Hat protector : en fr
  • FR817532A - High speed cylinder printing press for sheet printing : en fr
  • US2091403A - D-type handle : en
  • US2091563A - Air conditioning system utilizing refrigeration : en
  • US2091602A - Composite wheel : en
  • GB471434A - Improvements in or relating to wireless aerial systems : en
  • FR817534A - Closure for containers and tubes stable at high pressures : en fr
  • GB604104A - Improvements in and relating to turrets for aircraft, particularly aeroplanes : en
  • ES143824A1 - CLOSING SYSTEM FOR ALL KINDS OF BEVERAGE BOTTLES : en es
  • FR817436A - Tubular dart : en fr
  • ES143820A1 - A short-circuit motor armature construction procedure. : en es
  • GB471487A - A new or improved method or system of construction for dolls' houses : en
  • US2091626A - Bale tie : en
  • US2091768A - Recording apparatus : en
  • US2091831A - Working up of hydrocarbons and similar substances : en
  • USD105836S - Design for a desk : en
  • FR817455A - Apparatus for extracting granular materials, in particular ash and slag : en fr
  • GB471432A - Improvements in or relating to plaster board and the like : en
  • USD105873S - Design for a textile fabric : en
  • US2091432A - Potato planter : en
  • DE649772C - Attachment of parts in threaded synthetic resin objects : de en
  • US2091443A - Shielded electrode tube : en
  • FR817368A - Heating apparatus, especially liquid fuel : en fr
  • GB471107A - An improved box or case for the transport and/or storage of pointed missiles : en
  • PL25103B1 - A method of making fancy mixed yarns suitable for making fancy thread, loop or braided fabrics. : en pl
  • DE649644C - Edge burning machine : de en
  • ES143832A1 - An apparatus with an electric discharge lamp filled with gas and a layer of luminescent sulfide. : en es
  • CH192576A - Process for the preparation of a new oxycarboxylic acid. : de en
  • AU101864B2 - Improvements inthe manufacture of cooking dishes of lime-soda glass : en
  • US2091862A - Photoelectric image converter : en
  • USD105861S - Design for a doll : en
  • US2091803A - Mercury switch : en
  • CH192695A - Series of machine made dropper bottles with glass stoppers. : de en
  • US2091294A - Closure for steel drums : en
  • US2091354A - Treatment of hydrocarbons : en
  • PL25263B1 - A method for self-generation welding of iron and high-strength steel. : en pl
  • USD105904S - Design for an infant s shoe : en
  • US2091883A - Amusement apparatus : en
  • USRE20492E - Apparatus for cutting metal : en
  • GB471506A - Improvements in and relating to methods of testing the insulation of powdered iron particles : en
  • PL25188B1 - Electric board for solving digital and verbal problems. : en pl
  • US2091750A - Composite plank : en
  • US2091854A - Car truck : en
  • FR817539A - Condensation products and their production process : en fr
  • GB471406A - Improvements in or relating to printing telegraph exchange systems : en
  • US2091834A - Slide closure : en
  • GR6768B - MACHINE MAKING CARPET MACHINE MAKING MACHINE. : el en
  • DE649746C - Breech seal for firearms : de en
  • USD105870S - Design for a unit heater casing : en
  • US2091549A - Cabinet : en
  • DE649829C - Control on deep hole drilling machines : de en
  • DE649756C - Device for the continuous action of gases on liquids : de en
  • DE649724C - Control device for steam turbines with reheater : de en
  • CH192569A - Process for the production of solid alkali silicate. : de en
  • US2091734A - Furnace control system : en
  • US2091351A - Machine for operating on soles and shoes : en
  • US2091617A - Method of manufacturing separable interlocking fasteners : en
  • ES143805A1 - PROCEDURE FOR OBTAINING AZO DYES : en es
  • FR817447A - Television reception method for enlarged projection : en fr
  • FR817416A - Improvements to internal combustion engines of the liquid fuel injection and compression ignition type : en fr
  • GB471170A - Improvements in or relating to impression surfaces for printing apparatus : en
  • PL25296B1 - A device for explaining the waveform. : en pl
  • FR817527A - Differential compressor : en fr
  • GB471370A - Improvements in and relating to tyre chains and chain attachments for vehicle wheels : en
  • US2091324A - Toast ejector for continuous toasting machines : en
  • US2091653A - Traffic control signal : en
  • US2091664A - Carton : en
  • US2091292A - Refrigerator : en
  • US2091833A - Slide fastener : en
  • CA368463A - Poultry feeding and watering device : en fr
  • PL25197B1 - The method of producing p-amino-benzenesulfamide derivatives with bactericidal properties. : en pl
  • DE649873C - Type set for machine writing or the like. : de en
  • FR817267A - Manufacturing process for necklaces and the like : en fr
  • DE649554C - Thread feeding device for knitting machines, especially circular knitting machines : de en
  • US2091885A - Dental plate reforming method and apparatus therefor : en
  • USD105915S - Design for a chair frame : en
  • US2091410A - Internal combustion engine : en
  • DE649666C - Device for producing a narrow strip of light in the sound recording to be produced with an electron beam tube : de en
  • CH192583A - Process for the preparation of mixtures containing soaps. : de en
  • GB471260A - Improvements in or relating to airport lighting systems : en
  • FR817218A - Arrangement of weighing devices on port cranes or others : en fr
  • DE649696C - Pipe connection for parallel pipes : de en
  • DE649841C - Brush holder suspension with springs mechanically connected in series : de en
  • AU116436A - Improved method of and means for teaching handwriting andthe like : en
  • CH192586A - Process for the production of a filter mass for cleaning and softening water. : de en
  • IE14545L - Electric discharge lamps : en
  • CA368434A - Yarn and fabric : en fr
  • CH192616A - Corrosion-proof water meter. : de en
  • US2091810A - Apparatus for catching liquid samples : en
  • US2091633A - Sanitary food container and method of making : en
  • PL25177B1 - Coil or spindle for threading and threading machines. : en pl
  • DE649637C - Process for pressing liquid from various types of mass by means of screw presses with a pre-press and main press part : de en
  • DE649871C - A catalyst made of platinum or similar metals for the oxidation of ammonia with oxygen or gases with a high concentration of oxygen : de en
  • AU101871B2 - Apparatus for throwing grain : en
  • CH192639A - Ball joint. : de en
  • BE422852A - : en
  • CA368355A - Organic fluorine compound : en fr
  • US2091818A - Projector and searchlight : en
  • USD105923S - Design fob a dress : en
  • PL25079B1 - Aircraft Panic Device * : en pl
  • US2091712A - Vulcanization of rubber : en
  • US2091375A - Treatment of hydrocarbon oils : en
  • PL25204B1 - Bearing device for gyroscopic devices. : en pl
  • PL25302B1 - Kir-34 b, 3/40 .. A device for cutting fruit and vegetables, especially onions. : en pl
  • US2091380A - Combined sun visor and windshield heater : en
  • US2091648A - Fountain pen : en
  • USD105901S - Design fob a key chain or similar : en
  • CA368348A - Hygroscopic actuating element : en fr
  • CA368373A - Drill bit : en fr
  • CA368431A - Barrier for pedestrians : en fr
  • FR817319A - Improvements to glass and glazing : en fr
  • GB471163A - Process and means for grinding or polishing plane surfaces, in particular glass surfaces : en
  • CH192632A - Apparatus for heating and tempering rails at least in part. : en fr
  • US2091643A - Surgical countertraction splint : en
  • US2091789A - Sheet straightening machine : en
  • US2091821A - Safety twin steering : en
  • US2091942A - Glove display fixture : en
  • US2091669A - Elastic fluid turbine : en
  • CH192723A - Transillumination device for banners, in particular for illuminated advertising in shop windows. : de en
  • SU51647A1 - Ammonia synthesis method : en ru
  • US2091879A - Auxiliary emergency and safety vehicle wheel : en
  • DE649747C - Indicator spoon for targets : de en
  • PL25208B1 - An explosive riveting method, a rivet for carrying out the method, and a rivet heating tool. : en pl
  • AU101873B2 - Improvements in or relating to television and like transmitting apparatus : en
  • US2091702A - Production of low temperature coke : en
  • PL25087B1 - The steel structure of the bridge road. : en pl
  • PL25239B1 - The method of sheet plating. : en pl
  • CH192703A - Syringes for liquids, in particular for medical purposes. : de en
  • CH192539A - Box furniture with rotatable insert box. : de en
  • CH192526A - Process for the production of building panels. : de en
  • USD105829S - Design for a paper cup dispenser : en
  • DE649787C - Device for air cooling of rectifier vessels made of glass : de en
  • CA368394A - Vulcanized halogen : en fr
  • CA368426A - Fluent material dividing and combining apparatus : en fr
  • CH192590A - Apparatus for molding a printing plate. : en fr
  • GB471248A - Improvements in or relating to tin boxes and like containers : en
  • PL25218B1 - Bolt lock for motor vehicles, especially aircraft. : en pl
  • CA368450A - Shuttering device for ferro-concrete : en fr
  • CH192739A - Pneumatic tire for bicycles. : en fr
  • US2091383A - Lasting tool : en
  • US2091771A - Automatic electric control mechanism : en
  • CA368406A - Halogenated ketone processing : en fr
  • DK53507C - Procedure for the production of steam. : da en
  • DK53511C - Liquid-insulated electric AC switch. : da en
  • PL25148B1 - Device for heating the air entering the furnace. : en pl
  • PL25171B1 - Ring with a runner for ring fencing or treading machines. : en pl
  • CH192609A - Spring arrangement on magazines for high-speed automatic and semi-automatic weapons. : de en
  • CH192738A - Switching device for motor vehicle gearboxes. : de en
  • CA368349A - Air conditioning system : en fr
  • CH192588A - Set of prints used to encourage purchases. : en fr
  • CH192778A - Process for the preparation of a substituted pyridine-o-dicarboxamide. : de en
  • CH192630A - Drilling machine. : de en
  • CH192757A - Process for the preparation of a condensation product of the naphthalene series. : de en
  • PL25159B1 - Box for bandage material. : en pl
  • US2091473A - Electrical connection means : en
  • DE649633C - Process for the production of a guidance document running synchronously with the video film for the subsequent synchronization of sound recordings in sound film recordings : de en
  • ES143807A1 - PROCEDURE FOR OBTAINING AZO COLORANT : en es
  • GB471400A - Improvements in paper-making machinery : en
  • PL25075B1 - Oil burner. : en pl
  • US2091708A - Battery charging regulation : en
  • USD105869S - Design fob a radiator cabinet : en
  • DK53522C - Ajlerende. : da en
  • US2091530A - Lighting device for gas burners : en
  • US2091900A - Crystallizer apparatus : en
  • PL25298B1 - Apparatus for the exact dosing and dissolution of chlorine or ammonia in water. : en pl
  • DE649811C - Nickel iron alloy spring with hardening beryllium addition : de en
  • FR817357A - Process for modifying the affinity of products or objects formed : en fr
  • FR817333A - Shock absorber for motor vehicles or other applications : en fr
  • FR817378A - Improved method and apparatus for making blocks using powdery materials : en fr
  • US2091300A - Flight level control for automatic pilots : en
  • DK53519C - Window with U-shaped gutters for glass panes. : da en
  • FR817481A - Resilient seal systems for doors operating automatically by opening and closing movements : en fr
  • GB471419A - Improvements in or relating to water or like taps : en
  • PL25234B1 - Impact fuse. : en pl
  • CH192591A - Machine to be serived. : en it
  • PL25203B1 - Self-firing mine thrower. : en pl
  • PL25257B1 - A method of refining mineral, vegetable or animal oils, paraffins, waxes, resins and similar products. : en pl
  • BE422877A - : en fr
  • PL25104B1 - Method for removing contaminants, in particular cadmium and lead, from zinc ores, zinc concentrates and similar materials. : en pl
  • US2091632A - Slicing device : en
  • US2091254A - Loose leaf binding : en
  • CA368357A - Electric motor control : en fr
  • CH192730A - Push-in lids for containers. : de en
  • US2091752A - Compressor pump : en
  • US2091863A - Process of making commutator blocks for cathode ray tubes : en
  • CA368326A - Hydrocarbon oil processing : en fr
  • CA368408A - Sampling device : en fr
  • CH192654A - Method and device for starting multi-cylinder vehicle internal combustion engines, in particular aircraft engines. : de en
  • CH192774A - Method for airless fuel injection in internal combustion engines. : de en
  • PL25291B1 - Crank loader for machine gun belts. : en pl
  • PL25300B1 - A device for driving the ejectors in bombing in a diving flight. : en pl
  • US2091878A - Stabilized chlorine-containing rubber compounds and method of producing : en
  • PL25174B1 - Iron for ironing and steaming. : en pl
  • USRE20491E - Machine foe grinding twist drills : en
  • AU101874B2 - Improvements in or relating to knitting machines andin the production of fabric thereon : en
  • AU101880B2 - Forecarriage attachment for harrows : en
  • CH192756A - Process for the preparation of a mixture of the sodium salts of α-alkylindole sulfonic acids with odd-numbered alkyl radicals from C9 to C17. : de en
  • AU370036A - Improvements in or relating tothe production of titanium compounds : en
  • PL25154B1 - Doctor's, dentist's, hairdresser's chair, etc. : en pl
  • US2091367A - Azo dyestuffs and their production : en
  • US2091406A - Running gear assembly : en
  • US2091841A - Synchronized clock : en
  • US2091421A - Apparatus for cleaning steam : en
  • PL25086B1 - Alarm clock with bell contact. : en pl
  • PL25176B1 - Magnetoelectric signaling inductor. : en pl
  • PL25274B1 - A method of producing articulated inserts for shoes and ^ / j 7 //// f, a device for carrying out this method. V : en pl
  • US2091601A - Flash lamp : en
  • US2091857A - Light-buoy and method for feeding same : en
  • US2091496A - Internal combustion engine : en
  • US2091763A - Scaffolding and like clip or clamp : en
  • USD105843S - Design for a spoon or other article : en
  • GB471387A - Improvements in tooth-brushes : en
  • GB471194A - Improvements in electric signalling systems : en
  • PL25078B1 - The method of aluminothermic welding. : en pl
  • PL25286B1 - boleli ^ foo Round weaving loom for making sack-shaped fabrics. : en pl
  • US2091784A - Collision bulkhead construction for welded barges : en
  • USD105835S - Design for a slipper : en
  • PL25243B3 - Method for the production of I-ascorbic acid. : en pl
  • US2091698A - Cycle construction : en
  • USD105849S - Design fob a combined shredder : en
  • FR817356A - Folder folder : en fr
  • PL25242B1 - Bracket for the shelf above the washbasin. : en pl
  • US2091665A - Capacitor motor : en
  • PL25111B1 - Wrought iron boiler for water and steam central heating. : en pl
  • PL25191B1 - Men's casual shirt. : en pl
  • US2091655A - Centerless grinding machine : en
  • US2091529A - Hat fastening device : en
  • FR817225A - Improvements to heat exchangers with finned tubes : en fr
  • US2091580A - Flying machine : en
  • USD105833S - Design fob a toy ob similab abticle : en
  • CA368457A - Condensation product : en fr
  • PL25110B1 - Manufacturing method of a photoelectric electrode. : en pl
  • PL25216B1 - A method of producing bag fabrics or knitted products, reinforced in some places, on flat knitting machines, and a device for carrying out this method. : en pl
  • US2091509A - Independent wheel mounting : en
  • USD105898S - Design for a heel : en
  • AU101876B2 - Improvements in or relating to electron discharge devices : en
  • CA368391A - Dough-sheet manufacture : en fr
  • CH192759A - Method for the preparation of an aminochrysen. : de en
  • CA368444A - Tire vulcanizer : en fr
  • FR817545A - Process for manufacturing sensitive photoelectric layers subdivided like a frame on supports of any type : en fr
  • US2091917A - Apparatus for treating mineral oils : en
  • PL25276B1 - A method of hardening gold, platinum and paladium alloy. : en pl
  • US2091853A - Car truck : en
  • US2091381A - Conversion of hydrocarbon oils : en
  • CA368459A - Self-locking nut : en fr
  • AU101883B2 - Improvements in or relating to cutting blocks : en
  • US2091692A - Film movement apparatus : en
  • USD105899S - Design for a cab-over-engine fuel : en
  • US2091538A - Tool : en
  • DE649609C - Fridge : de en
  • FR817365A - Device for converting a rotary motion into a rectilinear motion or vice versa, applicable to explosion engines, pumps, compressors or the like : en fr
  • US2091456A - Cam grinding machine : en
  • US2091897A - Swing attachment for stirrup leathers : en
  • DE649487C - Device for securing railways : de en
  • PL25091B1 - Form for briquetting powdered or fine-grained bodies. : en pl
  • US2091273A - Carburetor : en
  • PL25134B1 - A device for an even charge of opal in furnaces. : en pl
  • US2091579A - Venetian blind : en
  • USD105860S - Design for a sled : en
  • DE649822C - Low-frequency final amplifier stage with screen grid tubes : de en
  • US2091571A - Complex compounds of phenyl cinchoninic acid and method of making the same : en
  • US2091735A - Sprayer : en
  • CH192627A - Non-magnetic bandage wire. : de en
  • PL25200B1 - Self-made firearm. : en pl
  • DE649874C - High-voltage electrical switchgear : de en
  • US2091574A - Seal for circulators and the like : en
  • US2091595A - Refrigeration : en
  • US2091429A - Process and apparatus for treating hats : en
  • PL25127B1 - Variable friction pedal. Patent dependent on patent No. 22984. : en pl
  • DE649553C - Two-machine warp knitted fabric : de en
  • DE649661C - Device for repeated automatic reclosing of an electrical circuit breaker by means of a switching magnet : de en
  • DE649708C - Electric yarn braking device for spinning, twisting and similar machines : de en
  • FR817497A - Racing game : en fr
  • AU342636A - Improvements in and relating to rotary ploughs or cultivators : en
  • CA368404A - Grain separator device : en fr
  • US2091769A - Perforating device for message transmission : en
  • CA368371A - Metal container : en fr
  • CA368443A - Angle cock : en fr
  • CA368445A - Compressed air gun : en fr
  • PL25124B1 - Auxiliary heater. : en pl
  • US2091524A - Can opener : en
  • FR817240A - Manufacturing process for diminished stockings and socks and resulting articles : en fr
  • FR817297A - Improvements to sticky layers and their manufacturing processes : en fr
  • FR817371A - Overcurrent resettable circuit breaker : en fr
  • CA368432A - Wire clamp : en fr
  • CH192760A - Process for the production of a new azo dye. : de en
  • US2091772A - Gravity reducing apparatus and method : en
  • BE422518A - : en
  • CH192541A - Shoehorn. : de en
  • US2091546A - Short wave converter : en
  • US2091757A - Heat exchange apparatus : en
  • AU337136A - Improvements in and relating tothe manufacture of match packets : en
  • PL25149B1 - Device for removing filter cake from all kinds of rotary filters. : en pl
  • US2091909A - Attachment for casket lowering devices : en
  • USD105852S - Design for a shoe or similar article : en
  • CH192535A - Mobile container. : de en
  • FR817300A - Remote control installation for the execution at will of switching orders, by emission, in the distribution network, of voltage drop taking place at determined time intervals : en fr
  • CH192517A - Stair step. : de en
  • CH192696A - Process for the preparation of 4,5-androstenedione-3,17. : de en
  • PL25287B1 - A device for feeding threads or other fibrous material in the form of loops in weaving machines, in particular in knitting looms. : en pl
  • US2091311A - Paper roll holder : en
  • US2091610A - Refractory products and preparation of same : en
  • PL25089B1 - . 3 * 9 ^^ / J / 0 ^ Folded elastic thread, a method for its production, and an apparatus for carrying out the method. : en pl
  • US2091314A - Double window construction : en
  • US2091884A - Method and apparatus for defrosting refrigerators : en
  • PL25096B1 - A device for producing a picture and sound film as a copy of a normal picture film and a narrow sound film. : en pl
  • US2091376A - Surface test indicator : en
  • PL25179B1 - Muffler for internal combustion engines. : en pl
  • US2091886A - Emulsifying agents : en
  • US2091482A - Pressure flow regulator : en
  • US2091628A - Expansion reamer : en
  • CH192610A - Bullet fuse with firing pin secured by centrifugal jaws. : de en
  • CA368318A - Coarse coke production from brown coal : en fr
  • CA368343A - Cylinder head : en fr
  • CH192584A - Process for the saponification of neutral fats and oils or mixtures containing them as a significant component. : de en
  • CH192762A - Process for the preparation of a water-soluble dye. : de en
  • CA368451A - Milk pail cover and fastener : en fr
  • CH192709A - Coin or token depositing device for coins respectively. Brand counter. : de en
  • US2091866A - Bobbin stripper : en
  • PL25074B1 - Device for the distribution of two-stroke harness machines. : en pl
  • US2091444A - Building structure reinforcement : en
  • US2091355A - Goods display holder : en
  • US2091585A - Coaster brake : en
  • US2091646A - Calculating machine : en
  • CA368381A - Rotary cultivator device : en fr
  • CH192690A - Burners for liquid fuel, especially for thick waste oil. : de en
  • CA368415A - Sewing machine : en fr
  • CH192736A - Pneumatic drive for automobile accessories, in particular windshield wipers. : de en
  • CH192753A - Process for the preparation of an oxycarbazole carboxylic acid aryl amide. : de en
  • FR817467A - Sports toy : en fr
  • DE649687C - relay : de en
  • ES143743A1 - A procedure for the preparation of alkali nitrates. : en es
  • DE649834C - Knee protection cap : de en
  • GB471224A - Improvements relating to liquid level indicating apparatus, for example for indicating the amount of liquid in a tank : en
  • CH192761A - Process for the production of a new azo dye. : de en
  • CA368319A - Wheel disc : en fr
  • CH192769A - Self-lubricating bearing body. : de en
  • DE649880C - Process for the production of dustable and sprayable plant protection products : de en
  • BE422785A - : en fr
  • AU32837A - Improvements in or relating to reciprocating pumps : en
  • CH192637A - Flexible, transparent, colored patterned flat structure made of cellulose derivative and process for its production. : de en
  • CA368350A - Temperature measuring and controlling apparatus : en fr
  • GB471371A - Cooling of aircraft engines : en
  • CH192646A - Inclined disc device for converting the reciprocating rectilinear motion of a piston into the rotary motion of a shaft and vice versa. : en it
  • GB471225A - A process for the ornamental coating of surfaces : en
  • CY49A - Improvements in recovery of sulphur : en
  • DE649739C - Two-stroke internal combustion engine with loop scavenging : de en
  • CA368425A - Fabric or paper processing : en fr
  • DE642104C - Spring washer : de en
  • PL25083B1 - Dry washing machine. : en pl
  • AU101964B1 - An improved method of tempering glass articles anda bath therefor : en
  • FR817493A - Normally gaseous hydrocarbon transformation process : en fr
  • FR817548A - Bicycle light fixture with rotating star magnet : en fr
  • US2091928A - Windshield cleaner : en
  • PL25232B1 - Valve joint for the conversion of piston steam engines, especially steam engine steam engines with a piston slide joint, into such engines with a valve joint. : en pl
  • US2091686A - Closure for collapsible tubes : en
  • US2091805A - Paper making method and machine : en
  • CA368368A - Container for dispensing grease : en fr
  • CH192623A - Protective device for the regulating organ of a watch. : en fr
  • GB471481A - Improvements in copying telegraph systems : en
  • CH192731A - Closure on tin cans. : de en
  • CH192698A - Process for the preparation of a specific active substance capable of destroying cancerous tumors. : en fr
  • PL25180B1 - A method of producing depolarization masses for galvanic cells from natural braunstein. : en pl
  • PL25248B1 - Machine gun. : en pl
  • DE649710C - Holding device for hollow dolls heads open at the neck and their adjustable eye devices : de en
  • FR817413A - Roll-up film holders for photography : en fr
  • FR817490A - High voltage chi ray tube support and feed device : en fr
  • FR817277A - Altimeter : en fr
  • FR817457A - Stamp for the application of hot seals and electrically heated stamp for this application : en fr
  • AU101863B2 - Improvements in or relating to cups and saucers : en
  • FR817361A - Stove for drying buildings : en fr
  • GB471226A - Improvements in arched structures such as roofs and bridges : en
  • GB471277A - Method of and composition for the treatment of water : en
  • GR6772B - IRON DOOR PACKAGING OF GLASS DAMIZAN. : el en
  • DE649616C - Magnet system with movable armature : de en
  • DK53520C - Press for the production of layered, shatterproof glass. : da en
  • USD105879S - Design for a brassiere or similar : en
  • US2091516A - Scale pan for weighing cigarettes : en
  • USD105840S - Design fob a gasoline pump : en
  • FR817401A - Pepper, salt, sugar, coffee and similar mill, for single or multiple use : en fr
  • GB471253A - Improvements in or relating to cabinets, sideboards and other articles of furniture : en
  • AU101881B2 - An improved syphonic valve for sanitary cisterns andthe like : en
  • BE422709A - FULL AND NON-TEAR LEATHER MANUFACTURING PROCESS : en fr
  • CH192751A - Process for making a stable, active oxygen-releasing detergent. : de en
  • US2091548A - Method of treating argillaceous substances and products thereof : en
  • US2091630A - Process of separating a mixture of trimethylamine and ammonia : en
  • CA368358A - Sound-proof wall : en fr
  • DE648926C - Electric gear motor : de en
  • PL25306B1 - Reprint paper. : en pl
  • GB471290A - Chord preparing mechanism for reed tone musical instruments : en
  • PL25150B1 - Control device for monitoring the temperature of cooling water in internal combustion engines on motor vehicles. : en pl
  • US2091491A - Synchronizing system : en
  • US2091535A - Deformation recording apparatus : en
  • DE649671C - Process for the production of metal spinning bobbins : de en
  • GB471220A - Improvements in and relating to anti-rolling apparatus for ships : en
  • GB471267A - Improvements in the formation or trueing of the teeth of screw-cutting dies or chasers : en
  • PL25192B1 - Cookware with a removable bottom. : en pl
  • FR817519A - Improvement in shock absorbing devices : en fr
  • GB471425A - Improvements in or relating cells for electric batteries : en
  • CH192775A - Sanitary napkin. : de en
  • FR817249A - New packaging for disinfectant blocks : en fr
  • GB471234A - Improvements in process for obtaining mgo and caco from dolomitic materials : en
  • PL25256B1 - A method for producing a coffee substitute. : en pl
  • US2091257A - Water soluble salts of basic prod : en
  • US2091733A - Adjustable chair back : en
  • FR817529A - Method and means for determining the position of a vessel relative to the immersion fluid : en fr
  • DE649656C - Method and device for drying flour : de en
  • GB471429A - Improvements in sliding sash windows : en
  • FR817391A - Packaging allowing the visible and separate presentation of various articles and their distribution one by one : en fr
  • FR817286A - Process for drying damp rooms or enclosures : en fr
  • FR817398A - Vehicle : en fr
  • CH192615A - Inclinometer with oscillating display element. : de en
  • FR817250A - Portable dielectrometer : en fr
  • GB471409A - Improvements in the manufacture of high-vacuum tubes : en
  • FR817237A - Flying machine propellant : en fr
  • GB471340A - Improvements in or relating to lead pencils : en
  • ES143815A1 - Procedure for obtaining hyposulfites. : en es
  • PL25135B1 - Contact device, especially for induction furnaces. : en pl
  • GB471276A - Improvements in or relating to sewing machines : en
  • GB471190A - Improvements in fluorescent material : en
  • GB471398A - Improvements in or relating to high-frequency amplifying systems : en
  • PL25182B1 - Device for developing photographic plates wound on rolls. : en pl
  • PL25246B1 - A method for the gradual exchange of carrier gases in gas-dust mixtures and an apparatus for carrying out this method. : en pl
  • US2091400A - Solvent extraction of oils : en
  • GB471141A - New and improved handle and latch mechanism : en
  • CH192718A - Device with an electrical discharge tube which emits secondary electrons when in operation. : de en
  • GB471245A - Method and apparatus for sparklessly interrupting heavy electric currents : en
  • US2091394A - Food container : en
  • FR817205A - luminescent screen for rare gas or mercury vapor light bulbs or tubes : en fr
  • GB471186A - Improvements in or relating to the manufacture of chlorine derivatives of unsaturated hydrocarbons : en
  • FR817540A - Hydraulic control means intended in particular for aviation : en fr
  • PL25303B1 - A method for producing artificial plastic masses from casein and an apparatus for carrying out the method. : en pl
  • DE649752C - Circulation for rolling mills : de en
  • USD105877S - Design for a glass bottle : en
  • ES143744A1 - A process for the manufacture of potassium nitrate. : en es
  • US2091321A - Change speed gearing : en
  • US2091774A - Muffler-filter apparatus for air flow passages : en
  • USD105858S - Design fos : en
  • ES143827A1 - An apparatus for the production of oils. : en es
  • US2091281A - Fuse for bombs : en
  • US2091607A - Refrigerator shelf : en
  • FR817310A - Enamel frit for the production of opaque tinplate enamels : en fr
  • DE649836C - Removal of beer stone from stationary beer vessels : de en
  • FR817257A - Improvements to the wheels of tractors or the like with extensible studs : en fr
  • GB471145A - A combined cigarette or cigar container and ash receptacle and extinguisher : en
  • GB471386A - An improved wheeled carrier for bins and like containers : en
  • US2091837A - Friction mechanism for car trucks : en
  • US2091868A - Portable table : en
  • USD105838S - Design fob a warming oven : en
  • CA368414A - Closure cap : en fr
  • FR817450A - Method and device for making envelopes, bags and the like closing by automatic gluing : en fr
  • GB471313A - Improvements in and relating to the manufacture of fancy yarns : en
  • US2091795A - Apparatus for making bags and the like : en
  • CH192524A - Process for manufacturing an electric heating body and heating body manufactured according to this process. : en fr
  • FR817343A - Back pusher, for quick opening or closing knife : en fr
  • US2091600A - Oil burner : en
  • US2091570A - Apparatus for setting machinery for a definite number of operations : en
  • US2091817A - Adjustable stretcher : en
  • CH192601A - Drawing board with tearing rail and device for securing the same in mutually parallel positions. : de en
  • CH192619A - Coil current transformer for high measurement accuracy. : de en
  • US2091476A - Flexible wood flooring : en
  • PL25120B1 - Protective cover for shaving and cutting. : en pl
  • US2091661A - Calculating device : en
  • FR817358A - Improvements made to liquid pressure remote control systems : en fr
  • FR817498A - Product for the destruction of harmful molluscs : en fr
  • CA368363A - Metal container : en fr
  • CH192657A - Method and device for fuel injection in internal combustion engines. : de en
  • FR817210A - Molded artificial fuels and their preparation process : en fr
  • GB471317A - Improvements in the manufacture of square-meshed wire fencing : en
  • FR817265A - Thrust ball bearing : en fr
  • FR817248A - New self-triggering trolley base : en fr
  • GB471362A - Improvements relating to automatic reclosing circuit breaker mechanisms : en
  • CH192565A - Machine for applying glue to cracked shoe soles. : de en
  • US2091419A - Art of producing coated alloys : en
  • USD105928S - Design for a dress : en
  • IE14570L - Thermionic valve circuits : en
  • FR817392A - Device for arming foundations for bees : en fr
  • CH192732A - Leaf spring. : de en
  • CH192706A - Cantilever breathing apparatus with a lever linked to the outside of the breathing bag for controlling the oxygen supply valve. : de en
  • GB471418A - Manufacture of dyestuffs of the phthalocyanine series : en
  • GB471332A - Improvements in or relating to circular knitting machines : en
  • GB471588A - Improvements in or relating to spring suspensions for road vehicles : en
  • US2091291A - Container : en
  • FR817412A - Method and device for color reproduction of moving pictures : en fr
  • GB471231A - Process for the production of water-proof fabrics permeable to air : en
  • US2091342A - Clock : en
  • US2091497A - Cardamon treated tobacco : en
  • US2091922A - Hair fastener : en
  • US2091911A - Powder dispensing can : en
  • US2091568A - Coating solution for fabrics : en
  • US2091597A - Electrical apparatus : en
  • US2091783A - Car truck : en
  • PL25187B1 - Instrument for declaring. : en pl
  • GB471204A - Improvements in or relating to the method of and apparatus for inserting a valve in a sheathed cable : en
  • CA368396A - Food container : en fr
  • US2091760A - Seam : en
  • US2091457A - Fish lure : en
  • US2091560A - Garment protector : en
  • US2091550A - Safety device for gas stoves : en
  • DE649709C - U-shaped clamping lever clamp to hold a pair of snowshoes together : de en
  • GB471232A - Improvements in or relating to armchairs, settees and the like : en
  • FR817326A - Engine fuels improvements : en fr
  • FR817276A - New binder and its manufacturing process : en fr
  • GB471254A - Improvements in and relating to taps and cocks for controlling fluid : en
  • DE649555C - Make-up remover : de en
  • GB471278A - Improvements in and relating to high voltage indicators : en
  • DE649711C - Swimming toys z. B. in the form of a ship with a screw engine : de en
  • GB471402A - Method and apparatus to keep the wire of fourdrinier machines for the manufacture ofpaper, cardboard and the like, clean : en
  • FR817329A - High temperature resistant green pigment : en fr
  • GB471335A - Improvements in or relating to portfolios, temporary covers and like protective bindings : en
  • CH192729A - Packing for tobacco products, in particular cheroots. : de en
  • CH192746A - Liquid dispenser with flow meter and counter. : de en
  • USD105893S - Design for a eange : en
  • GB471385A - Improvements in or relating to exhaust systems for internal-combustion engines : en
  • US2091742A - Paint brush holder : en
  • USD105867S - Design for a coat : en
  • GB471191A - Improvements in or relating to television apparatus : en
  • GB471369A - Improvements in or relating to indicating devices for weighing apparatus : en
  • FR817342A - Chronograph watch : en fr
  • GB471346A - Improvements in articles of self bonded granular material and methods of making the same : en
  • GB471496A - Process for dyeing animal fibres : en
  • DK53533C - Bicycle handlebars. : da en
  • US2091741A - Multicylinder internal combustion engine, particularly diesel and like engine : en
  • USD105921S - Design foe a dress : en
  • DE649690C - Process for the production of hydrides : de en
  • US2091545A - Key purse : en
  • FR817397A - Improvements in the use of silico-aluminous binders in the manufacture of certain structures and in particular in injection work : en fr
  • FR817400A - Improvements to braking and clutch components : en fr
  • DE1415165U - : de en
  • FR817255A - Sophisticated installation for clean, smudge-free application of paint or the like to sheets of paper or other material : en fr
  • AU347736A - System for reproducing sound-on-film records : en
  • DE649705C - Combination lock : de en
  • GB471174A - Improvements in and relating to the scavenging of two-stroke internal combustion engines : en
  • DE649723C - Device for regulating the amount of feed water in single-pipe steam generators for vehicles operated with forced flow : de en
  • PL25181B1 - Connection systems for delaying or extending the operation of relays or other electrical devices. : en pl
  • CA368453A - Thick lubricant container emptying apparatus : en fr
  • PL25122B1 - Manufacturing method from starch and products containing starch, glue, finishes, foodstuffs or sealing agents. : en pl
  • US2091540A - Means for making reinforcement wire cages : en
  • US2091856A - Batting : en
  • US2091478A - Swing link : en
  • US2091824A - Electric cord set : en
  • US2091881A - Automatic diaphragm : en
  • FR817508A - Manufacturing process of unalterable, granular fertilizers containing calcium and ammonium salts : en fr
  • DE649673C - Device for mixing and kneading : de en
  • GB471507A - Variable inductance tuning device : en
  • US2091624A - Method of treating hydrocarbon oils : en
  • US2091796A - Method of making bags and the like : en
  • US2091323A - Can testing machine : en
  • AU354936A - Improvements relating tothe manufacture of flexible transparent sheets : en
  • DE649316C - Ignition device for swivel burners of gas ovens o. : de en
  • FR817226A - Treatment and bleaching of textile fibers for spinning operations : en fr
  • US2091576A - Etched electrode : en
  • US2091798A - Coil terminal : en
  • DE649876C - Line separator for disconnecting devices connected to high-voltage lines, in particular surge arresters, in the event of insulation faults in the device : de en
  • ES143835A1 - An appliance with an electric discharge lamp. : en es
  • GB471729A - Improvements in and relating to hydraulic power transmission means : en
  • CH192617A - Temperature switch. : de en
  • US2091934A - Valve actuator mechanism : en
  • GB471484A - Improvements relating to the drying of grass and crops generally : en
  • PL25167B1 - A method of producing permanently stiffened linen fabrics. : en pl
  • GB471318A - Improvements relating to apparatus, for preventing beer settling : en
  • GB471321A - Improvements in or relating to devices comprising artificially-cooled high-pressure mercury-vapour discharge tubes : en
  • US2091802A - Circuit interrupter : en
  • US2091472A - Electrical control means : en
  • US2091536A - Centrifugal drier : en
  • US2091541A - Telephone system : en
  • USD105878S - Design fob a chair : en
  • DE649734C - Brewing containers for coffee brewers : de en
  • US2091520A - Rotary engine : en
  • FR817217A - Improvements to manual bending machines : en fr
  • CA368330A - Glass-to-metal seal : en fr
  • US2091906A - Tool joint : en
  • FR817301A - Apparatus or installation for the treatment of liquids such as milk : en fr
  • GB471171A - Improvements in or relating to anti-splash devices for taps and the like : en
  • FR817295A - Improvements to a piston machine having three or more cylinders, placed parallel to and around the crank shaft : en fr
  • GB471416A - Process for the manufacture of thiazolium compounds : en
  • PL25090B1 - Device for cutting shoelaces from a rubber plate. : en pl
  • SU51668A1 - Device for automatic locking of coke oven machines : en ru
  • US2091264A - Nonsinkable boat : en
  • GB471354A - Improvements in and relating to methods of and means for effecting electrical measurements and determinations : en
  • DK53510C - Electrical Switch. : da en
  • AU342136A - Improved decorative slab or tile and method of making same : en
  • FR817422A - Anthraquinone series intermediates and dyes : en fr
  • FR817543A - Discharge device for cell suction filters : en fr
  • CA368325A - Railway car brake arrangement : en fr
  • CH192600A - Method and machine for reproducing images. : de en
  • USD105917S - Design for a glove : en
  • CH192530A - Automatic door closer. : de en
  • US2091396A - Embossed covering material and method of manufacture : en
  • DE649686C - Support for electric lights : de en
  • US2091306A - Level flight control for automatic pilots : en
  • CH192518A - Frame for panels of doors, windows or the like. : en fr
  • CH192575A - Process for the preparation of 4,6-dinitro-2,3,5-trimethyl-1-tertiary-butyl-benzene. : en fr
  • PL25210B1 - : en pl
  • US2091577A - Positive acting rotary engine : en
  • AU345636A - Improved method of, and means for, cutting stone : en
  • CA368347A - Hygroscopic material : en fr
  • CH192749A - Process for making a stable, active oxygen-releasing detergent. : de en
  • AU101862B2 - Improvements in or relating to reciprocating pumps : en
  • PL25275B1 - Coating machine for continuously moving paper web. Uniform layer of pulp. : en pl
  • CA368429A - Spring cushion for glass : en fr
  • CH192519A - Device for driving stakes into the earth. : de en
  • US2091372A - Fruit product and processing : en
  • US2091364A - Method of controlling the liquid absorbing property of coagulated latex : en
  • US2091423A - Circuit interrupter : en
  • CH192776A - Process for the preparation of a substituted pyridine-o-dicarboxamide. : de en
  • US2091283A - Platen printing press : en
  • CA368418A - Animal jaw opening tool : en fr
  • AU336936A - The production of improved effects on cellulosic fabrics : en
  • BE422455A - : en
  • US2091745A - Valve : en
  • GB471407A - Elevating mechanism for firearms : en
  • CH192611A - Air raid shelter. : de en
  • CH192721A - Eye-catching device. : de en
  • FR817448A - Cathode ray switch : en fr
  • AU284636A - Improvements in or relating to television and like transmitting apparatus : en
  • CH192705A - Gas mask with microphone and associated sound amplification device. : de en
  • CH192595A - Cinema machine with cooling by a motor fan. : de en
  • US2091858A - Screw jack : en
  • US2091835A - Slide closure : en
  • USD105855S - Design for a dress ensemble : en
  • PL25119B1 - The method of making coffee substitutes from apples and pears. : en pl
  • DE649748C - Conveyor belt : de en
  • US2091253A - Method and apparatus for making matrices : en
  • US2091440A - Tobacco pipe and load : en
  • US2091518A - Dispenser for liquids : en
  • US2091888A - Gyroscope : en
  • DE649781C - In the heat, oxygen and another gas, e.g. B. carbonic acid, developing briquetted masses : de en
  • US2091673A - Hinge structure : en
  • USD105866S - Design for a textile fabric : en
  • US2091309A - Recovery of sulphuric acid in saccharification process : en
  • CH192574A - Process for the preparation of a nitrogen-containing aromatic aldehyde. : de en
  • CH192672A - Electric switch. : de en
  • CH192699A - Process for the preparation of parabenzylaminobenzenesulfamide. : en fr
  • CH192674A - Switch combination. : de en
  • BE422662A - : en
  • DE649872C - Process for the production of solid, water-soluble aluminum acetate : de en
  • FR817309A - Installation for rolling thin sheets : en fr
  • PL25114B1 - Coil for non-stop for carded ring rippers. : en pl
  • USD105881S - Design for a sweater : en
  • US2091395A - Aeronautical device : en
  • CA368360A - Can body seam : en fr
  • CH192752A - Process for making a stable, active oxygen-releasing detergent. : de en
  • PL25170B1 - Seating of the front car wheels on the vertical axis. : en pl
  • USD105885S - Design fob a combined baggage rack : en
  • US2091797A - Method of making white lead pigment : en
  • CH192597A - Roll film camera. : de en
  • CH192773A - Injection pump. : de en
  • CA368340A - Non-knocking fuel : en fr
  • CH192744A - Self-drinking bowls for animals. : de en
  • DK53516C - Method and Apparatus for the production of sand cores and sand molds, in particular of green sand, by means of one or more sandblasting nozzles. : da en
  • US2091452A - Fuse cut-out : en
  • US2091493A - Process of separating a solution into its constituent parts : en
  • US2091584A - Cooling unit for artificial refrigerating systems : en
  • US2091904A - Door closing and checking device : en
  • CA368320A - Surgical instrument : en fr
  • DE649743C - Die for round pressing the punched out prongs of fork work pieces : de en
  • PL25211B1 - A method of making clear or colored glass dishes for lighting purposes. : en pl
  • US2091770A - Alarm clock : en
  • ES143829A1 - Improvements introduced in the duplicating machines. : en es
  • CA368331A - Double ended socket : en fr
  • DE649652C - Spool bank replacement device for wing spinning, wing twisting and similar textile machines : de en
  • US2091290A - Reversible floor tool and polishing attachment : en
  • US2091430A - Electrical protective system and method : en
  • US2091753A - Wearing apparel : en
  • FR817362A - Improvements to electric oscillation generators : en fr
  • FR817473A - Sand ejector device for motor cars : en fr
  • CH192671A - High voltage circuit breaker blown with compressed gas. : de en
  • DE649693C - Inflatable mattress or the like. : de en
  • DE649776C - Scissors for serrated cuts : de en
  • CH192740A - Tandem bike. : de en
  • PL25297B1 - Product for preserving meat products. : en pl
  • US2091353A - Method and apparatus for conditioning air : en
  • US2091503A - Vibratory screen : en
  • US2091480A - Picker arm for potato planters : en
  • US2091910A - Splash guard : en
  • USD105882S - Design fob a combined ashtray : en
  • US2091582A - Tea-rolling machinery : en
  • GB471196A - Improvements in manually propelled road and water vehicles : en
  • US2091370A - Internal combustion engine : en
  • US2091658A - Oil burner : en
  • USD105925S - Design for a dress : en
  • US2091593A - Radiator : en
  • DE649720C - Pre-printed files with swiveling support plates that can be adjusted to a certain angle : de en
  • CH192614A - Antenna arrangement to achieve course lines. : de en
  • CH192641A - Coupling for the releasable connection of a shaft with a stub axle, in particular to be able to attach various types of tools to a motor shaft in a releasable and overhung manner. : de en
  • PL25199B1 - M * P toki x9 / axis Sealing of rotating parts against fixed machine parts. : en pl
  • US2091531A - Handle for luggage : en
  • US2091939A - Device for controlling the discharge of gaseous fluids or material : en
  • US2091552A - Building construction : en
  • US2091872A - Toy vehicle : en
  • US2091869A - Compartment box car : en
  • US2091896A - Arrangement for testing the viscosity of liquid materials : en
  • DE649677C - Booking typewriter with plug-in device : de en
  • DE649763C - Device for self-regulating long-term charging of collector batteries from AC networks using a rectifier : de en
  • GB471139A - Improvements in mechanism for feeding sheets to wrapping machines and the like : en
  • FR817294A - Further training in devices for the production of folding blanks for the production of boxes : en fr
  • BE422908A - : en
  • DE649655C - Arrangement for drying wood and other moist objects with the help of high-frequency alternating fields : de en
  • CA368401A - Refractory body : en fr
  • US2091727A - Multiple head embroidery machine : en
  • FR817492A - Box for roasted coffees : en fr
  • ES143801A1 - A new system for adapting refrigerators for domestic use to refrigerate and preserve all kinds of foodstuffs. : en es
  • FR817407A - Clip and its mounting method : en fr
  • DE649643C - Folding machine : de en
  • DK53529C - Automobile with adjustable, independently resilient suspended Wheels. : da en
  • GB471306A - Improvements in and relating to thermionic valve circuits : en
  • ES143818A3 - New jack system. : en es
  • US2091326A - Automatic parking mechanism for vehicles : en
  • CA368433A - Commode : en fr
  • CH192687A - Electric radiator for high temperatures, especially for electric ovens. : de en
  • FR817275A - Improvements to openable or retractable mesh panels such as mosquito nets or other bay farm panels : en fr
  • GR6766B - COME WAVING EXECUTION SYSTEM. : el en
  • BE422914A - : en
  • FR817204A - Improvements to winches for clamshells : en fr
  • FR817442A - Improvements to thermionic lamp assemblies : en fr
  • US2091812A - Alkyl and alkoxy-arylamino anthraquinone dyestuffs and process for preparing them : en
  • US2091887A - Emulsion and process of manufacturing same : en
  • PL25183B1 - Capsule for introducing medicament into the body cavities. : en pl
  • PL25212B1 - A device for driving pumps, distributing liquids to the channels of the specific circulation of the hydraulic pedals. : en pl
  • US2091744A - Apparatus for manufacturing pile fabric : en
  • US2091778A - Keyboard construction and key control : en
  • US2091465A - Fire alarm and prevention system : en
  • GB471252A - Improvements in tubular electric heating elements, and in the method of manufacture thereof : en
  • FR817420A - Method and device for synchronizing image transmission devices, teleprinters, in particular those whose different characters are transmitted by pulses corresponding to parts of characters : en fr
  • FR817530A - Process for obtaining images or inscriptions in one or more colors on a hard material by photo-mechanical means : en fr
  • DE649789C - Iron-shaped roller hanger for curtains, drapes, etc. like : de en
  • US2091832A - Slide fastener : en
  • FR817464A - New economical and fast gas burner allowing welding without acetylene gas and without oxygen under pressure : en fr
  • GB471497A - Improvements in or relating to radiotelegraphy and radiotelephony receivers : en
  • GB471403A - Playing cards : en
  • US2091930A - Lock : en
  • DE649757C - Manufacture of meta- and polyphosphates : de en
  • GB471500A - Improvements in or relating to shooting apparatus : en
  • DK53528C - Adjusting device for Devices for Regulating the Supply of Secondary Air to Automobile Engines. : da en
  • GB471388A - Improvement in catamenial devices : en
  • CH192668A - Conductor with bead insulation and method of making the same. : de en
  • FR817375A - Improvements to sheet receivers for printing machines : en fr
  • GB471189A - Process for the production of vaccines for use in the treatment of canine distemper : en
  • DE649674C - Production of nitrites : de en
  • DE649667C - Shut-off valve for gases under high pressure : de en
  • GB471342A - Method and devices for the obtainment of fluid streamline contours : en
  • CA368409A - Container : en fr
  • CH192683A - Process for the production of discharge tubes with a vacuum vessel at least partially made of ceramic material. : de en
  • US2091637A - Driving mechanism for propellers : en
  • US2091946A - Folding table : en
  • CH192693A - Grinding apparatus for dental purposes. : de en
  • US2091899A - Adjustable seat : en
  • FR817405A - Cigarette manufacturing process and machine suitable for carrying out this process : en fr
  • FR817521A - Water tube boiler with natural water circulation for all possible steam pressures : en fr
  • FR817389A - Ticket : en fr
  • US2091606A - Apparatus for pasteurizing and deodorizing lacteal fluids under vacuum : en
  • US2091667A - Loose leaf holder for binders : en
  • GB471296A - Improvements in creel frames : en
  • DK53505C - Procedure for the manufacture of an acidic product for use in baking powder or self-raising flour. : da en
  • US2091308A - Welding apparatus : en
  • US2091709A - Countercurrent contact apparatus : en
  • BE422892A - Improvements to syringes for hypodermic injections. : en fr
  • US2091616A - Electrical condenser and the like : en
  • US2091453A - Fuse : en
  • US2091471A - Switching mechanism : en
  • GB471180A - Improvements in and relating to crushing, grinding and pulverising machines : en
  • GB471422A - Improvements relating to dynamo regulators : en
  • GB471431A - Improvements in and relating to silencers for gaseous currents : en
  • PL25126B1 - Bottle cap. : en pl
  • FR817470A - Manufacture of special bricks for high temperature kiln chimneys : en fr
  • CA368390A - Variable speed drive : en fr
  • CH192585A - Process for the production of phosphate fertilizers. : de en
  • GB471195A - Improvements in illuminated advertising devices : en
  • ES143822A1 - A gas generator for the gas supply of the fixed or mobile explosion engines. : en es
  • FR817376A - Improvements to devices used to cool curved stereotype printing plates : en fr
  • FR817460A - Improvements to numbering devices or devices : en fr
  • FR817509A - Stabilized mineral material and process for preparing this material : en fr
  • CH192770A - Pressure device for wood planing machines with the pressure element reaching under the knife shaft. : de en
  • FR817380A - Toggle mechanism for overcurrent circuit breakers : en fr
  • US2091558A - Precision cranking apparatus : en
  • FR817337A - Lens mount refinements : en fr
  • FR817304A - Improvements to pneumatic devices to achieve flattening of films in aerial cameras : en fr
  • FR817463A - Automotive ambulance : en fr
  • DE649851C - Fastening device for punch in the tool holder : de en
  • GB471478A - Improvements in, and relating to, apparatus for coiling sheet or strip material : en
  • US2091780A - Chain pin extractor : en
  • US2091947A - Packing ring and assembly : en
  • DE649689C - Process for forming oxide cathodes in discharge tubes : de en
  • CH192534A - Electric cooker. : en fr
  • US2091654A - Apparatus for stringing rackets : en
  • CA368361A - Can body seam : en fr
  • AU502336A - Improvement in method and apparatus for making maps : en
  • BE422806A - Manufacture of cellulose ethers : en fr
  • CA368403A - Refractory body : en fr
  • CH192631A - Method for lifting and laying down rods provided with pressed-on, still soft coatings, and device for carrying out this method. : de en
  • CH192710A - Goods issuing machine. : de en
  • BE422457A - : en
  • CA368417A - Washing machine : en fr
  • US2091346A - Label : en
  • AU101882B2 - A method of intensifying fruit or vegetable juice : en
  • CH192697A - Process for the preparation of a basic ester. : de en
  • CA368341A - Organic sulphur compound : en fr
  • CA368352A - Sealing means for can filling units : en fr
  • US2091279A - Dredging apparatus : en
  • US2091631A - Sewage digestion : en
  • PL25240B1 - : en pl
  • US2091340A - Method of hot rolling strips : en
  • US2091391A - Change speed system : en
  • PL25195B1 - Resilient support. : en pl
  • PL25194B1 - Chair stand. : en pl
  • US2091649A - Fountain pen : en
  • CA368334A - Reversible shaded pole motor : en fr
  • US2091659A - Egg carton : en
  • US2091907A - Pumping mechanism : en
  • US2091929A - Dispenser : en
  • US2091336A - Combination water heater and steam generator : en
  • US2091761A - Address printing machine : en
  • USD105837S - Design for a console extension table : en
  • PL25213B1 - Freshly printed paper punch. : en pl
  • CA368462A - Aromatic compound : en fr
  • AU345336A - Improved flooring : en
  • US2091322A - Printing unit : en
  • DE649744C - Device for making light sources visible in the air : de en
  • FR817462A - Variable speed automatic clutch and shifting : en fr
  • PL25133B1 - Device for automatic blocking of a track section. : en pl
  • US2091583A - Ophthalmic mounting : en
  • PL25252B1 - Crusher. : en pl
  • PL25290B1 - Electric discharge lamp. : en pl
  • CH192754A - Process for the production of betaine from n-octodecylaminoacetic acid. : de en
  • GB471274A - An improved method of manufacture of boots and shoes : en
  • CH192713A - Switching device for the optional management of the calls with the microphone of the microphone unit or with a loudspeaker telephone. : de en
  • CY48A - Recovery of sulphur : en
  • GB471213A - A process for splitting up mixtures of hydrocarbons of high molecular weight : en
  • FR817477A - Tanning agents and process for preparing such products : en fr
  • GB471263A - Improvements in or relating to attenuating networks, and to wave transmission systems embodying attenuating networks : en
  • AU101849B2 - The production of improved effects on cellulosic fabrics : en
  • CH192645A - Regulator. : en fr
  • US2091765A - Curtain stretcher : en
  • FR817264A - Process for the production of magnesium and calcium from dolomite : en fr
  • US2091413A - Internal combustion engine : en
  • US2091505A - Conveyer boom : en
  • US2091813A - Electrical testing apparatus : en
  • US2091334A - Sliver bobbin : en
  • US2091553A - Sanitary appliances such as wash basins, baths, etc., having hot and cold water supply taps : en
  • CH192533A - Hot water generator. : de en
  • FR817339A - Polyvinyl acetal-based resins and process for their preparation : en fr
  • USD105871S - Design for an automobile radiator : en
  • US2091258A - Amplifier : en
  • IE14878L - Tempering glass : en
  • US2091657A - Dyestuffs of the anthraquinone thio-ether series : en
  • USD105865S - Design for a clothes wringer for a : en
  • AU101857B2 - Improvements in bearings : en
  • CH192532A - Process for the distillation of coal and other carbonaceous and bituminous materials. : en fr
  • CH192634A - Method and device for processing plastic masses. : de en
  • GB471310A - Blind stitching presser foot for zigzag sewing machines : en
  • US2091500A - Valve tool : en
  • DE649762C - Telecommunication cable terminating device with a terminal plate made of insulating material for holding fuse elements, separators, or the like. : de en
  • GB471412A - Improvements in or relating to the manufacture of compound cast bearings : en
  • FR817504A - Improvements made to silent or sound cinematographic film projection equipment : en fr
  • FR817544A - Recuperative lighting device for the use of tubular light sources : en fr
  • GB471315A - Improvements in and relating to "tell-tale" devices for indicating the failure of anelectric circuit : en
  • GB471395A - Improvements in or relating to carburettor throttle valve control means : en
  • GB471489A - Manufacture of dyestuffs capable of being chromed and intermediate products therefor : en
  • US2091635A - Projectile : en
  • FR817331A - Device for the transformation of a motor torque : en fr
  • GB471132A - Improvements in and relating to controls for mechanically-propelled vehicles : en
  • GB471144A - A process of and apparatus for tempering glass sheets : en
  • GB471200A - Method and means for the purification of sewage and other foul waters : en
  • GB471173A - Improvements relating to body construction of rail coaches, omnibuses, motor cars and other like structures : en
  • US2091618A - Valve and faucet : en
  • GB471175A - A thermal insulation applicable also for use in heat radiation : en
  • GB471268A - Gas-filled electric incandescent lamp : en
  • DE649668C - Runner for hydraulic machines : de en
  • FR817335A - All-metal elastic coupling : en fr
  • US2091259A - Resistance unit : en
  • US2091603A - Container : en
  • FR817350A - Process for setting in motion, with a view to their projection, finely divided or liquid materials and apparatus for carrying out this process : en fr
  • GB471486A - Improvements relating to means for zeroising the indicating mechanism of liquid measuring and dispensing apparatus : en
  • DE649810C - Scraper trough connection : de en
  • DE649878C - Electric motor with commutator for driving hand machine tools : de en
  • FR817511A - Die for the molding of stereotypes or plates : en fr
  • FR817419A - Scrap iron shears : en fr
  • GB471377A - Lavatory pan brush : en
  • DE649741C - Self-propelled, hand-operated cutting torch cart : de en
  • FR817395A - Improvements to electronic discharge devices : en fr
  • GB471492A - Improvements in or relating to dissector tubes for use in television systems : en
  • DK53532C - Support for Bicycles. : da en
  • US2091938A - Velocipede frame member : en
  • AU101887B2 - Process forthe production of hydrogen peroxide : en
  • PL25071B1 - A method of simultaneous thermal processing of a mixture of bituminous materials and hydrocarbon oils. : en pl
  • US2091819A - Searchlight : en
  • US2091926A - Drier fabric : en
  • CA368386A - Fuse switch : en fr
  • ES143831A1 - A process for the regeneration of catalysts intended for the synthesis of benzine. : en es
  • GB471217A - Improvements in or relating to gyroscopic instruments : en
  • GB471300A - Improvements in electric circuit breakers having arc quenching arrangements : en
  • USD105908S - Design for a knitted fabric : en
  • CH192512A - Wooden construction element. : de en
  • CH192727A - Process for the production of hollow paper bodies provided with bottoms. : de en
  • US2091416A - Mining machine : en
  • USD105902S - Design for a lawn bake : en
  • AU102086B2 - Improvements in television cameras and projectors : en
  • CA368344A - Fluid pressure power device : en fr
  • DE649852C - Attachment of the insertable knife to tools such as reamers, knife heads and the like. like : de en
  • US2091677A - Impeller : en
  • USD105830S - Design for a dispenses for paper cups : en
  • US2091672A - Rapid firing rifle : en
  • CA368389A - Variable speed drive : en fr
  • CH192643A - Safety closing device on pipelines of hydraulic power plants. : de en
  • DE649865C - Electric roller mounted on fixed journals, especially for driving conveyor belts, with a transmission gear and internal rotor motor located inside the roller : de en
  • CH192766A - Process for the preparation of a polymethine dye. : de en
  • AU101851B2 - Improvements in and relating tothe manufacture of match packets : en
  • CA368449A - Window and closure : en fr
  • CA368375A - Dust and gases separating apparatus : en fr
  • US2091599A - Combination baggage rack and lighting fixture : en
  • PL25206B1 - Device for ventilating shelters and other closed spaces. : en pl
  • US2091313A - Depilatory : en
  • US2091608A - Joint for double wall hot air pipes : en
  • US2091695A - Device for transporting live fish : en
  • US2091874A - Flow bean indicator : en
  • US2091903A - Method of treating tungsten carbide : en
  • PL25137B1 - Method of obtaining hard metal alloys. : en pl
  • CH192531A - Fire regulation device on central heating boilers for coal firing. : de en
  • CA368402A - Refractory body : en fr
  • CH192599A - Method and means for producing fonts, in particular for offset and gravure printing. : de en
  • PL25121B1 - A method of making bowels from plastic. : en pl
  • US2091645A - Apparatus for extracting petroleum, etc. : en
  • USD105859S - Design fok a fountain pen : en
  • US2091263A - Apparatus for and method of canning : en
  • US2091613A - Sampling device : en
  • US2091668A - Trailer coupler : en
  • US2091674A - Barrel type tappet : en
  • US2091690A - Preparation of washed sugar : en
  • USD105832S - Design for a tucked embroidered : en
  • FR817280A - External air heating device, intended in particular for automobiles : en fr
  • GB471201A - Hydraulic drive for machine tools : en
  • CH192747A - Device for wet treatment and drying of freshly spun rayon threads in a continuous operation. : de en
  • CA368412A - Punching machine : en fr
  • CH192733A - Motor vehicle propulsion. : de en
  • BE422686A - : en
  • FR817332A - Accessory for cycle or other applications : en fr
  • DK53517C - Combined Dishwasher and Plate Holder. : da en
  • FR817417A - Pneumatic device for surgery : en fr
  • AU289936A - Method for photoelectric sound reproducing or recording and apparatus and phonograms therefor : en
  • CA368345A - Parasiticidal composition : en fr
  • CH192542A - Passing machine. : de en
  • US2091331A - Process and apparatus for making safety glass : en
  • US2091488A - Barbecue : en
  • US2091739A - Oil and dust packing for rotating axles and shafts : en
  • CH192513A - Process for the production of hollow stone ceilings. : de en
  • DK53537C - Electrically driven mechanism for opening and closing doors. : da en
  • US2091916A - Pipe clamp : en
  • US2091262A - Pattern grading : en
  • DE649657C - Channel rod or lath made of wood, pipe and. like : de en
  • DE649665C - Process for the preparation of durable solutions from morphine hydrochloride for injection purposes : de en
  • CH192594A - Typewriter. : de en
  • US2091377A - Box-making machine : en
  • USD105926S - Design fob a dress : en
  • PL25225B1 - Advertising device with replaceable rotating boards. : en pl
  • CH192549A - Process for obtaining, in a continuous operation, completely organized lustrous yarns, and machine for carrying out this process. : en fr
  • US2091660A - Folding chair : en
  • AU346336A - Manufacture of improved acoustic plaster : en
  • DE649795C - Process for the manufacture of cylindrical coil springs of unequal pitch : de en
  • FR817251A - Improvements made to control and maneuvering devices using a fluid servomotor, in particular those used in transmissions for automobiles : en fr
  • US2091357A - Speed recording instrument : en
  • US2091384A - Door handle and latching device : en
  • US2091738A - Permanent waving : en
  • AU344636A - Improvements in or relating to electron discharge devices ofthe beam type : en
  • CA368351A - Protective wearing apparel manufacture : en fr
  • CA368423A - Heat exchanger : en fr
  • US2091414A - Apparatus for effecting vibration : en
  • CA368387A - Ball mill : en fr
  • US2091502A - Weight indicating device : en
  • US2091820A - Projector : en
  • DE649716C - Circular linking machine : de en
  • DE649793C - universal joint : de en
  • AU345236A - Improvements in or relating to ' automatic ticketing' equipment for telephone or like exchange systems : en
  • CA368335A - Chloroethyl ether : en fr
  • US2091483A - Manufacture of secondary and tertiary alkyl phenols : en
  • US2091256A - Manipulating means for a form hanger : en
  • US2091875A - Metallic nailing structural member : en
  • US2091519A - Refuse vehicle and the like : en
  • AU101860B2 - Improved apparatus forthe treatment of flax leaves andthe like forthe recovery of fibre therefrom : en
  • DE649680C - Device on typewriters for pressing keys : de en
  • BE422834A - : en
  • PL25224B1 - Method of separating solid paraffin from hydrocarbon oils using centrifuges. : en pl
  • CH192562A - Device to enable suspenders to be worn under the shirt. : de en
  • AU101870B2 - Improvement in method and apparatus for making maps : en
  • FR817516A - Pressure motor : en fr
  • GB471413A - Improvements in or relating to metal sockets, bushes, ferrules, rivets and the like : en
  • PL25228B1 - A device in belt presses for cutting clay strands. : en pl
  • FR817443A - Process for the preparation of oils having a relatively low paraffin content from oils having a relatively high paraffin content by treatment with solvents : en fr
  • PL25231B1 - Adjustable device for connecting door handles. : en pl
  • US2091861A - Wooden mast : en
  • CA368456A - Coffee compound : en fr
  • CH192633A - Process for the production of articles with a raised patterned surface from textile and rubber. : de en
  • PL25128B1 - Variable length brace for airplanes. : en pl
  • USD105842S - Design for a serving tray : en
  • FR817261A - Soap : en fr
  • GB471182A - A safety attachment for a guillotine-type cutting machine : en
  • GB471240A - Improvements in electric accumulators and other galvanic cells : en
  • GB471373A - Improvements in refractory bricks : en
  • US2091442A - Oil burner door : en
  • US2091468A - Freewheel control : en
  • GB471199A - Improvements in or relating to image dissector tubes for use in television systems : en
  • GB471673A - Method of and means for positioning lumber in edging machines : en
  • US2091374A - Thread cleaning nut : en
  • US2091851A - Electric cord set : en
  • DE649814C - Process for cleaning wood sugar solutions : de en
  • GB471140A - Improvements in or relating to theodolites : en
  • US2091422A - Bun pan : en
  • GB471239A - Improvements relating to mule ring spinning machines : en
  • GB471301A - Improvements in and relating to incandescent and other electric lamps and similar devices : en
  • CH192558A - Ironing trestle with two parallel ironing boards. : de en
  • FR817459A - Improvements made to internal combustion engines, especially those with multiple expansion : en fr
  • GB471275A - Improvements in or relating to means for controlling yarn in cop form within shuttles : en
  • FR817383A - Bypass capacitor for high frequency devices : en fr
  • USD105922S - Design for a dress : en
  • CH192764A - Process for the preparation of a polymethine dye. : de en
  • PL25185B1 - The graining method of fine ores and other starting materials, especially roasted blende. : en pl
  • GB471363A - Clothes wringer : en
  • GB471256A - Improvements relating to sleeve bearings : en
  • US2091701A - Transmitting apparatus : en
  • US2091762A - Exposure meter : en
  • FR817444A - Cathode ray tube for feeling images in television : en fr
  • US2091387A - Display form : en
  • CH192604A - Christmas tree candle holder. : de en
  • US2091386A - Electroplating : en
  • FR817487A - Pounding machine : en fr
  • GB471280A - Relaxation oscillation apparatus : en
  • US2091826A - Oscillograph film holder mechanism : en
  • FR817491A - Control handle for sanitary appliance : en fr
  • PL25237B1 - A device for pouring liquids into dishes. : en pl
  • US2091895A - Support for shade roller brackets : en
  • US2091445A - Capsule filling device : en
  • US2091699A - Optical system for color processes : en
  • US2091892A - Treating oils in the presence of clay : en
  • USRE20490E - Method of removing speat residue : en
  • BE422649A - : en
  • US2091285A - Reel : en
  • US2091282A - Process of treating fine filamentous threads : en
  • PL25084B1 - Trolley extender with differential steering gear. : en pl
  • PL25273B1 - A method of cleaning liquids used on aircraft equipped with propellers. : en pl
  • USD105918S - Design for a dress : en
  • CH192765A - Process for the preparation of a polymethine dye. : de en
  • PL25166B1 - A compound for covering floors, walls and similar surfaces. : en pl
  • FR817232A - Dispenser for watering lances and other applications : en fr
  • FR817299A - Printing machine : en fr
  • US2091707A - Heel guard : en
  • US2091848A - Measuring instrument : en
  • DE649663C - Device for protection against flashbacks in grid-controlled vapor or gas discharge vessels, in particular iron rectifiers : de en
  • AU101867B2 - Improvements in or relating to electron discharge devices ofthe beam type : en
  • CH192557A - Process for achieving a white color in articles of daily use made from textile materials, in particular laundry. : de en
  • FR817287A - Improvements in the treatment of distillable carbonaceous materials using hydrogenating gases : en fr
  • GR6767B - PERFECTION ON HARMONIC MOUTH (MUSICAL INSTRUMENT). : el en
  • FR817292A - Improvements in distillation and apparatus for the distillation of solid carbonaceous materials : en fr
  • PL25145B1 - A method of printing two or more line inscriptions on accounts and their copies by cash registers and an apparatus for carrying out the method. : en pl
  • US2091348A - Machine for the continuous casting of metal sheets : en
  • US2091572A - Paper manufacture : en
  • PL25100B1 - Beam electron tube. : en pl
  • US2091808A - Gas turbine : en
  • USD105847S - Design for a brassiere vest or simi : en
  • PL25101B1 - Additional device for the riflescope. : en pl
  • FR817262A - Improvements to t appliance ducts. s. f., talking machines and similar devices : en fr
  • DE649701C - Rivet head catcher for catching off rivet heads when chiseling off : de en
  • PL25245B1 - Magnetoelectric signaling inductor. : en pl
  • PL25169B1 - Machine for steaming fabrics. : en pl
  • BE422549A - : en fr
  • AU350236A - Improvements in television cameras and projectors : en
  • US2091255A - Thermoelectric motor : en
  • US2091310A - Cut-off blade for paper rolls : en
  • PL25163B1 - Cooking pot. : en pl
  • CA368440A - Fit form dryer : en fr
  • CA368465A - Fusible line-tapping device : en fr
  • DE649846C - Take-off device for double cylinder circular knitting machines : de en
  • PL25251B1 - Double thread sewing spindle. : en pl
  • US2091919A - Power transmission mechanism : en
  • PL25304B1 - Method of demitting activated carbon. : en pl
  • US2091349A - Fractional distillation : en
  • PL25295B1 - Tile lock. : en pl
  • US2091517A - Paper or like tube : en
  • USD105841S - Design for a steamship : en
  • GB471348A - Improvements in and relating to coin freed amusement and vending apparatus : en
  • AU101888B2 - Improvements in water meters : en
  • GB471269A - Improvements in whipstitching apparatus : en
  • US2091923A - Collapsible form or mold : en
  • DE649681C - Attachment of the pinion on rail engines by shrinking on : de en
  • FR817369A - Improvements to filtering devices : en fr
  • PL25265B1 - The method of producing an insulin preparation. : en pl
  • US2091495A - Extensible handle for caskets : en
  • USD105839S - Design for elastic fabric : en
  • CA368378A - Optical testing device : en fr
  • CH192603A - Drawing square made of transparent material. : de en
  • US2091315A - Crushing machine : en
  • PL25189B1 - Machine for cutting ham, sausages and similar cold cuts. : en pl
  • US2091845A - Propelling device for watercraft and aircraft : en
  • US2091915A - Electric discharge device : en
  • GB471292A - Improvements in or relating to means for modifying the charge of internal combustionengines : en
  • FR817234A - Communication device using light : en fr
  • GB471424A - Converters and their assembly : en
  • AU151636A - Improvements in or relating to cups and saucers : en
  • CH192737A - Device on automobiles to adjust the seat. : de en
  • GB471262A - Improvements in or relating to number-printing machines : en
  • DE649323C - Process for the production of condensed organic sulphonic acids : de en
  • FR817425A - Method of establishing control models and patterns of objects, such as shoes for example, to be reproduced in large numbers, and new industrial products resulting therefrom : en fr
  • FR817506A - Improvements to the ski lifts : en fr
  • GB471319A - Improvements in or relating to the driving of scavenging pumps for internal combustion engines : en
  • US2091564A - Separator : en
  • USD105892S - Design for a range : en
  • AU101877B2 - Improvements in or relating to sound reproducing apparatus : en
  • USD105872S - Design for a textile fabric : en
  • PL25202B1 - Embedding the support carriages in the frame of the tracked vehicle. : en pl
  • US2091398A - Synthesis of lubricating oils : en
  • US2091477A - Hoist line hook : en
  • CH192621A - Wristwatch box. : en fr
  • USD105911S - Design fob a textile fabric : en
  • US2091684A - Table tennis ball : en
  • GB471393A - Improvements relating to pipe joints : en
  • PL25068B1 - A method of obtaining magnesium and a furnace for this purpose. : en pl
  • PL25261B1 - A device for a sawmill. : en pl
  • CA368366A - Vacuum container : en fr
  • CA368464A - Sand spreading apparatus : en fr
  • AU101866B2 - Improvements in and relating to rotary ploughs or cultivators : en
  • CH192561A - Welding blade. : de en
  • GB471350A - Improvements in or relating to mechanism for imparting false twist to textile rovings : en
  • CH192704A - Hair clipper. : de en
  • DE649647C - Method of inserting multiple fasteners into rubber patches at the same time : de en
  • AU414836A - Improvements in or relating to lubricants : en
  • US2091307A - Welding machine : en
  • US2091388A - Swinging door operating means : en
  • US2091566A - Carburetor : en
  • FR817311A - Iron holder : en fr
  • BE422786A - : en
  • DE649659C - Method of making alkaline collectors : de en
  • DE649879C - Portable sand processing machine : de en
  • CA368421A - Trailer and tank combination : en fr
  • BE422936A - : en fr
  • CH192525A - Electric heating coil. : de en
  • DK53525C - Procedure for Manufacturing Bulk Bituminous Paper Product. : da en
  • CA368374A - Churn : en fr
  • CA368405A - Ketol catalytic oxidation : en fr
  • US2091304A - Welded article of high copper alloy : en
  • US2091846A - Coin detector : en
  • US2091940A - Rack for holding printing machine matrix magazines : en
  • PL25219B1 - A coin operated telephone. : en pl
  • FR817202A - Damped compensation coil : en fr
  • ES143810A3 - Device for winding roller. : en es
  • PL25238B3 - A device for briquetting solids or solid fuel dust. : en pl
  • DE649848C - Thermostat for mechanical or electrical vibration transmitter : de en
  • FR817452A - Ornamental nail article : en fr
  • GB471323A - A method of and means for displaying articles in showrooms and the like : en
  • CH192675A - Handle for rotary light switch with device to prevent switching on in cases of blackout. : de en
  • GB471187A - Improvements in or relating to the manufacture of chlorinated hydrocarbons : en
  • FR817230A - Fixing device for brackets used in mounting scores : en fr
  • GB471299A - Improvements in or relating to push-pull modulators : en
  • CA368367A - Metal container : en fr
  • IE14642L - Asbestos cement products. : en
  • USD105895S - Design for a miniature refreshment : en
  • DE649799C - Locking device for swiveling spurs or spur rollers of aircraft : de en
  • ES143685A1 - A procedure for obtaining motor fuels. : en es
  • CA368395A - Pulp bleaching process : en fr
  • PL25175B1 - A device for generating and regulating the thrust in the smoke box of a steam locomotive, protecting against the discharge of sparks and smoke. : en pl
  • US2091527A - Automatic stop mechanism for grinding machines or lathes : en
  • GB471375A - Improvements in combined heating and lighting appliances : en
  • DK53523C - Engine compressor with variable closing pressure for the compressed air. : da en
  • ES143799A1 - A procedure for the production of reels with sensitive bands for photographs. : en es
  • GB471203A - Improvements in or relating to bowden mechanism : en
  • US2091276A - Dimple making appliance : en
  • GB471347A - Improvements in or relating to holders for flags, mascots, badges and other devices on motor vehicles : en
  • DE649706C - Trigger device for single and continuous fire on automatic firearms : de en
  • US2091479A - Mechanical means for edge stitching fabrics : en
  • FR817386A - Control device for elevators and hoists supplied by alternating current : en fr
  • US2091508A - Motion picture camera : en
  • US2091893A - Eel holder : en
  • GB471131A - Improvements in and relating to boxes for growing plants : en
  • US2091365A - Carburetor : en
  • FR817353A - Advanced Hair Band : en fr
  • FR817269A - Metal building material : en fr
  • GB471287A - Improvements in and relating to wheel positioning mechanism for grinding or abrading machines : en
  • US2091327A - Lifeboat launching apparatus : en
  • USD105924S - Design for a dress : en
  • DK53509C - Coupling for gain control by multi-stage amplifiers included in radio receivers or other devices. : da en
  • FR817494A - Pressurized liquefied gas container : en fr
  • GB471378A - Improvements in electric systems for automatic regulation of the temperature in railway vehicles : en
  • FR817303A - Landing gear for air vehicles : en fr
  • FR817528A - Advanced device for mounting pistons : en fr
  • GB471503A - Combined electric stove and refrigerator cabinet : en
  • PL25308B1 - Impact fuse for projectiles fired from unthreaded mortars of all calibers. : en pl
  • FR817312A - Improvements to air cushion seats for automobiles and other applications : en fr
  • FR817323A - Modulation method, in particular for television : en fr
  • GB471380A - Improvements in or relating to electric lanterns or the like : en
  • DE649812C - Trash rack cleaner : de en
  • DE649662C - Single-phase induction motor for connection to two different mains voltages : de en
  • US2091405A - Mining machine : en
  • US2091806A - Handle bail adjustment : en
  • PL25289B1 - A boiler in the shape of a furnace with a furnace for fragmented fuel, especially coal dust. : en pl
  • AU101886B2 - Improved optical glass and method of manufacturing same : en
  • AU472436A - Acord-line holder and control : en
  • CA368447A - Concealed hinge : en fr
  • USD105880S - Design for a bottle : en
  • US2091562A - Air conditioning system : en
  • DK53514C - Combustion plant. : da en
  • GB471502A - Process for the waterproofing of ground : en
  • US2091777A - Fruit and vegetable pitter and parer : en
  • US2091877A - Closure for containers : en
  • FR817471A - Partial decarburization process by solid state reheating of corrosion resistant chromium-nickel steels to prevent intercrystalline corrosion : en fr
  • GB471333A - Improvements in or relating to the production of cold by the vaporization of liquid fuel in connection with internal combustion engines : en
  • US2091352A - Spring cover : en
  • DE649718C - Device to prevent the formation of shine when ironing fabrics : de en
  • USD105914S - Design for a slip : en
  • CH192577A - Process for the preparation of a new oxycarboxylic acid. : de en
  • FR817307A - Method and device for atomizing fuel escaping from the starting and idling nozzle of internal combustion engines : en fr
  • FR817414A - Method and apparatus for continuously casting ferrous and non-ferrous metals into a specific shape : en fr
  • US2091506A - Garment protector : en
  • USD105886S - Design for a mending cabinet : en
  • US2091289A - Purification of phthalic anhydride : en
  • CH192677A - Surge arrester for high-voltage alternating current with automatic self-shutdown. : de en
  • US2091303A - Indicating and control mechanism : en
  • US2091528A - Illuminating device : en
  • DE649675C - Sheet feeding device on rotary printing machines : de en
  • AU101859B2 - An improved tool for driving fencing and like posts : en
  • CA368317A - Goffered film copying method : en fr
  • CA368377A - Thermostatic switch : en fr
  • US2091882A - Securing device : en
  • CH192679A - High-voltage converters for high-voltage currents with mechanically moved contacts. : de en
  • CH192781A - Change gears for bicycles. : de en
  • US2091747A - Packing for vehicle doors : en
  • US2091816A - Car door fastening : en
  • AU539636A - Improved apparatus forthe treatment of flax leaves andthe like forthe recovery of fibre therefrom : en
  • DE649683C - Fluid switch with a differential pump piston built into a discharge chamber : de en
  • GR6774B - Rotating Plow. : el en
  • DE649460C - Lubricating device for the air compressor of brake systems in motor vehicles : de en
  • FR817379A - Nitrogenated fuel for diesel engines and method for manufacturing it : en fr
  • FR817429A - Antenna layout : en fr
  • GB471351A - Improvements in and relating to precompressors for internal combustion engines : en
  • AU361736A - Improvements in or relating to filtering or thickening apparatus : en
  • CH192550A - Sewing machine. : de en
  • CH192598A - Equipment for photographic baths. : de en
  • CH192669A - Connection device on shielded cables. : de en
  • FR817288A - Jacquard knitting machine : en fr
  • GB471331A - Improvements in and relating to oil burners for furnaces : en
  • US2091822A - Drawing frame for spinning machines : en
  • US2091756A - Driving device for magnetic sound recording and reproducing apparatus : en
  • FR817220A - Electro-optical concentration system : en fr
  • BE422666A - : en
  • DK53515C - Syringe with a rubber sleeve placed around the cylinder. : da en
  • US2091399A - Synthetic lubricating oils : en
  • US2091850A - Apparatus for the performance of metallurgical or chemical reactions : en
  • PL25093B1 - Method for the production of magnesium chloride from dolomite and calcium chloride. : en pl
  • US2091870A - Electrical regulation : en
  • AU101875B2 - Improvements in or relating to machines for operating upon hides skins, leather orthe like : en
  • US2091420A - Clasp for supporting wearing apparel : en
  • DE649648C - Heel front trimmer : de en
  • USD105916S - Design for a textile fabric : en
  • PL25201B1 - Electric synchronous clock with alarm clock device. : en pl
  • CA368385A - Clamp stick : en fr
  • CH192728A - Vessel, in particular a box with a lid that can be clamped on and a device for opening the vessel. : de en
  • CA368328A - Pulverized fuel burner : en fr
  • BE422657A - : fr
  • CH192644A - Tap. : en fr
  • US2091439A - Multipactor oscillator and amplifier : en
  • USD105883S - Design for a handbag or the like : en
  • PL25172B1 - Contact washer for supporting lube rail joints and fixing points | : en pl
  • US2091450A - Plywood patching machine : en
  • US2091278A - Gun mount : en
  • AU101895B2 - Improved method of, and means for, cutting stone : en
  • US2091467A - Tubular fabric knitting machine : en
  • USD105912S - Design for a heel : en
  • US2091333A - Starting and stopping mechanism for circular looms : en
  • US2091627A - Composition of matter and process : en
  • DE649595C - Glare-free deep wide radiator : de en
  • CH192685A - Rectifier with circulating, electrolytic liquid at a fixed contact passing nozzle. : de en
  • CA368411A - Fuel feeding system : en fr
  • CH192714A - Pay phone for telephone systems with automatic long-distance traffic. : de en
  • DE649774C - Pendulum plow with laterally pivoting shares : de en
  • US2091379A - Safety valve : en
  • US2091696A - Activation of charcoal : en
  • CH192536A - Device for grating cheese and the like. : de en
  • PL25164B1 - A method of producing items from rubber milk. : en pl
  • CA368316A - Combustion aiding device : en fr
  • CA368410A - Tobacco processing : en fr
  • US2091515A - Tool : en
  • AU101890B2 - Improvements in and relating to protective devices for television receivers : en
  • CA368383A - Tile : en fr
  • FR817318A - Permanent magnet for acoustic transformation devices : en fr
  • BE422438A - : en
  • US2091614A - Container : en
  • US2091683A - Chrome tanning : en
  • GB471110A - A weather-proof enclosure for displaying name labels or the like for plants, shrubs, sown beds of seeds and the like : en
  • GB471229A - Improvements in or relating to hemstitching devices : en
  • US2091543A - Feed device for baking ovens : en
  • US2091489A - Lamp assembly : en
  • CH192537A - Bottom grate. : de en
  • CH192620A - Alarm clock. : de en
  • CH192540A - Swivel body with device for blocking it in any swivel position. : de en
  • CH192735A - Pneumatic braking device for motor vehicles. : en fr
  • AU101856B2 - Improvements in or relating tothe production of titanium compounds : en
  • GB471415A - Improvements in or relating to the rot-proofing and water-proofing of materials : en
  • FR817531A - Electrically operated dust extractor for cleaning : en fr
  • CA368446A - Conveyer : en fr
  • USD105875S - Design for a vanity : en
  • CA368420A - Weatherstrip : en fr
  • CA368454A - Egg testing apparatus : en fr
  • CH192559A - Stiffened item of laundry consisting of at least two layers of fabric glued together. : de en
  • FR817334A - Apparatus for manufacturing by centrifugation in earthen molds artillery projectiles, bombs for aerial vehicles or the like : en fr
  • CH192692A - Projection device. : de en
  • AU101850B2 - Method forthe production of improved cellulose fabrics : en
  • USD105844S - Phonograph cabinet : en
  • US2091271A - Receiver : en
  • US2091921A - Pickling machine : en
  • CH192768A - Shock absorber device for pivots. : en fr
  • CA368458A - Rubber product : en fr
  • CH192717A - Auxiliary device for a radio receiver for easy and simple reading of the programs of the transmitting stations. : en fr
  • CH192553A - Detergents and cleaning agents. : de en
  • US2091455A - Inflated ball and method of making same : en
  • US2091723A - Refrigerating bottle : en
  • PL25236B1 - A method of manufacturing by corrugating objects from a previously cut sheet of very thin thickness with simultaneous forming, and a device for this purpose. : en pl
  • US2091267A - Method of decreasing curd tension in milk : en
  • US2091295A - Closure and its manufacture : en
  • US2091404A - Pipette : en
  • CH192673A - Switch with arc extinguishing by flowing compressed gas. : de en
  • CH192712A - Telephone tax recorder. : en fr
  • US2091873A - Drying unit : en
  • FR817208A - New tool consisting of a drill combined with a hammer and new drill usable in this combination : en fr
  • GB471208A - Improvements in or relating to wick burners for lamps or stoves : en
  • CH192682A - Electrode system with asymmetrical conductivity. : de en
  • CH192605A - Ski binding. : en fr
  • US2091650A - Luggage carrier : en
  • US2091746A - Combined drier and cooking device : en
  • US2091905A - Electric resistance heating element : en
  • CH192689A - Heavy oil burner. : en fr
  • US2091250A - Wave filter : en
  • US2091594A - Air conditioning apparatus for automobiles : en
  • CH192538A - Chair with reclining seat. : de en
  • US2091318A - Liquid level indicator : en
  • US2091389A - Wind actuated advertising sign : en
  • US2091671A - Valve : en
  • US2091737A - Liquid dispenser : en
  • US2091786A - Egg beater : en
  • USD105857S - Design for an automobile heater : en
  • GB471243A - Improvements in and relating to eel holders : en
  • GB471283A - Improvements in terminal blocks for use in connecting up electrical measuring apparatus : en
  • GB471330A - Improvements in or relating to electric discharge devices : en
  • DK53521C - Match container. : da en
  • GR6769B - DEFENSIVE HAND BOMB. : el en
  • AU261636A - Improvements inthe manufacture of cooking dishes of lime-soda glass : en
  • US2091486A - Lubricating means for double disk grain drills : en
  • PL25129B1 - A Dutchman for grinding pulp or similar material and a team of such Dutchmen. : en pl
  • CH192511A - Process for the sterilization of soil or other materials used for planting purposes. : de en
  • CH192527A - Method and device for the joint production of high-quality and ordinary cement. : de en
  • CH192589A - Process for the production of letterpress forms with an elastic printing layer. : de en
  • CA368359A - Container and key : en fr
  • CH192734A - Motor chassis for off-road vehicles. : de en
  • US2091464A - Tractor : en
  • DE641055C - Device for forming a web of partially overlapping sheets to be presented against a printing machine or other working machine : de en
  • DE649736C - Press mold for producing shell-like case parts from celluloid : de en
  • DE649813C - Process for the saccharification of wood and similar plant substances : de en
  • DE647528C - Telegraph system with double-current operation with a power-free line in the idle state and with a line relay permanently connected to the line in the idle state with the transmitter batteries being switched off : de en
  • DE649753C - Process for the production of pipes from particularly hard material : de en
  • FR817219A - Hot water installation device and tap for its realization : en fr
  • CH192678A - Metal-walled electric discharge tube and method of making such a tube. : de en
  • AU101853B2 - System for reproducing sound-on-film records : en
  • CH192528A - Door lock. : de en
  • CA368324A - Railway car brake arrangement : en fr
  • US2091368A - Sole attaching apparatus : en
  • US2091898A - Crystallization : en
  • PL25205B1 - Orthopedic shoe. : en pl
  • AU101885B2 - Television transmission method : en
  • CA368333A - Electric converting system : en fr
  • CH192724A - Crampon for horseshoe. : en fr
  • CA368382A - Heel-lock and arch cushion : en fr
  • US2091339A - Front feed means for a paper carriage : en
  • US2091901A - Refrigerator : en
  • PL25108B1 - A method of producing hard soap. : en pl
  • PL25284B1 - Seating the body on the rear axle of the car. : en pl
  • CH192755A - Process for the preparation of the betaine of a substituted aminostearic acid. : de en
  • PL25223B1 - Device for automatic gear changing in motor vehicles. : en pl
  • PL25281B1 - Hydraulic pedal. : en pl
  • CA368388A - Time meter : en fr
  • GB471143A - Production of high vacuum : en
  • US2091277A - Gaseous electric discharge device : en
  • AU35537A - Improvements in water meters : en
  • CH192763A - Process for the preparation of a polymethine dye. : de en
  • CA368336A - Chemical compound : en fr
  • CA368455A - Basket ball game device : en fr
  • CH192547A - Process for the production of completely shrunk rayon in a direct process. : de en
  • FR817377A - Apparatus used to polish a sheet of glass in motion : en fr
  • DE649704C - Spring loaded dispensing hose mouthpiece valve : de en
  • FR817437A - Tilting or hollow body with lugs for the establishment of floors, walls or other reinforced concrete : en fr
  • GB471221A - Improvements in or relating to baths : en
  • GB471365A - Improvements in and relating to the production of fluorescent images from optical orinfra red images : en
  • PL25190B1 - Poppy grinder. : en pl
  • PL25294B1 - Device for lubricating axle bearings in vehicles running on rails. : en pl
  • US2091811A - Concentrating table : en
  • US2091931A - Garment supporting device : en
  • AU101868B2 - Acord-line holder and control : en
  • FR817290A - Improvements to tractors for agricultural implements : en fr
  • FR817435A - Automatic control device, in particular for air vehicles : en fr
  • GB471376A - Improvements relating to magnets : en
  • GB471291A - Improvements in or relating to copper base alloys : en
  • GB471338A - Improvements in or relating to printing and coating papers for use as wrappers, particularly for food products : en
  • GB471423A - Improvements relating to thermionic valve circuits : en
  • AU510736A - Improvements in or connected withthe doors and door mountings of garages, warehouses andother structures : en
  • US2091781A - Corset : en
  • USD105831S - Design fob a textile fabric : en
  • FR817243A - Hitching of dumper or other overturning vehicle : en fr
  • CA368339A - N-vinyl compound : en fr
  • US2091344A - Means for storing water : en
  • US2091663A - Ultra high frequency transmitter : en
  • DE649804C - Fuse for window rudder : de en
  • GB471133A - An attachment for use in centreless grinding, turning and like machining operations : en
  • US2091260A - Sales and advertising display device : en
  • US2091305A - Fabricated structure and method of making : en
  • US2091751A - Carburetor valve : en
  • USD105863S - Design for a clothes wringer for a : en
  • US2091371A - Rheostat : en
  • US2091454A - Production of creped fabrics having strand components of the acetylated cellulose class : en
  • DE649825C - Liquid flow switch with conductive liquid : de en
  • FR817221A - Improvements to electrical gauges : en fr
  • FR817382A - Camshaft improvements : en fr
  • DE649751C - Pipe system for evaporator : de en
  • FR817370A - coffee grinder : en fr
  • GB471264A - Improvements in devices for the playing of a game : en
  • FR817387A - Improvements to automatic coupling devices for remote signaling systems : en fr
  • CH192622A - Watch movement. : en fr
  • PL25138B1 - Method for obtaining weldable hard metals. : en pl
  • AU33737A - Apparatus for throwing grain : en
  • CA368353A - Nut threading machine : en fr
  • CH192652A - Engine system with internal combustion engine, exhaust gas turbine and a compressor that supplies all of the air for the internal combustion engine. : de en
  • CH192660A - Interference suppression resistor for switching on in ignition circuits of motor vehicles. : de en
  • GB471334A - Improvements in trough grates for the burning of towns' refuse and other low grade fuel : en
  • US2091507A - Attachment for remote control valves : en
  • US2091787A - Expansion valve mechanism for refrigerating systems : en
  • US2091448A - Kitchen case : en
  • US2091773A - Electric socket : en
  • US2091514A - Classifying material : en
  • US2091715A - Photomechanical resist : en
  • FR817510A - Improvements to bituminous emulsions and their preparation process : en fr
  • GB471270A - Improvements in or relating to granular microphones : en
  • CH192651A - Method for operating pressure oil blade regulators and blade regulators for Kaplan turbines. : de en
  • CY52A - Improvements in recovery of sulphur : en
  • US2091945A - Folding table : en
  • USD105889S - Design for a combined basket rack : en
  • PL25162B1 - A brick for making models of buildings and the method of making durable models from these bricks. : en pl
  • CA368362A - Can body seam : en fr
  • FR817345A - Cleaning plate for block letters, date stamps, stamps of all kinds and more : en fr
  • DE649835C - Process for the production of colored grape juice : de en
  • BE422613A - : en
  • DE645305C - Device for regulating the gas flow for calorimeters : de en
  • DE649761C - High voltage cable with waveguide : de en
  • PL25230B3 - A furnace for burning coal in coke boilers for central heating, built of cast iron or iron sheet. : en pl
  • ES143485A1 - Improvements in the hardening of the surface of objects. : en es
  • US2091864A - Lathe center : en
  • US2091925A - Guardrail : en
  • US2091792A - Flow indicator : en
  • DE649583C - Mobile earth shovel : de en
  • DE649777C - Process for the production of porous bodies : de en
  • FR817352A - Mixer-kneader for laminated chocolate masses : en fr
  • US2091814A - Ruffler attachment for sewing machines : en
  • CH192750A - Process for making a stable, active oxygen-releasing detergent. : de en
  • PL25309B1 - Wood distillation method. : en pl
  • US2091843A - Signaling apparatus : en
  • FR817233A - Improvement in retractable goniometric frames for submarines : en fr
  • USD105919S - Design for a dress : en
  • US2091828A - Stitching device : en
  • US2091894A - Two-cycle internal combustion engine : en
  • US2091512A - Grip for golf clubs : en
  • GB471215A - Improvements in or relating to the production and use of rubber-like masses : en
  • US2091441A - Garment : en
  • US2091902A - Winding machine : en
  • GB471504A - Improvements in or relating to machines for and methods of forming and/or covering boxes : en
  • PL25267B1 - Device for supplying tobacco to e.g. a cigarette making machine. : en pl
  • US2091640A - Process of dewaxing mineral oil : en
  • US2091604A - Vented container : en
  • FR817308A - Process for the application of metallic layers on ceramic parts : en fr
  • PL25080B1 - An electrical clock signaling device. : en pl
  • CH192560A - Toe warmers and stocking protectors. : de en
  • FR817385A - Folding shelf : en fr
  • CH192722A - Scoreboard. : de en
  • CH192772A - Clamp for clamping tension members. : de en
  • FR817284A - Integration device : en fr
  • US2091401A - Fuel injection system : en
  • DE649758C - Sheet delivery device on corner conveyor tables of folding machines : de en
  • DK53527C - Sledding. : da en
  • BE422810A - : en fr
  • DE649895C - Device for sealing the interior of electric submersible pump motors : de en
  • GB471298A - Improvements relating to horizontal boring and like machines : en
  • GB471235A - Improvements in ash melting gas-producers : en
  • GB471244A - A thermal insulation applicable also for use in heat radiation : en
  • GB471341A - Improvements in or relating to gland packings : en
  • US2091636A - Production of trimethylamine : en
  • US2091825A - Dining room chair slip cover : en
  • FR817541A - Conveyor, especially escalator : en fr
  • US2091609A - Method of retaining camber in rails : en
  • FR817546A - Parachute bag : en fr
  • FR817216A - Improvements to shutters or shutters : en fr
  • FR817525A - Improvement in auxiliary triangle windings for transformers : en fr
  • US2091809A - Container : en
  • DE649685C - Process for the manufacture of laminated cores for electrical machines : de en
  • GB471309A - Strainer for vegetables and fruits : en
  • US2091466A - Mottled paint : en
  • US2091567A - Noncrumpling fabric and process of making the same : en
  • US2091937A - Treatment of acid sludge : en
  • FR817258A - Improvement in armor-piercing projectiles : en fr
  • AU336836A - Improvements in cultivators and like implements : en
  • BE421860A - Process for making melted cheese : en fr
  • DK53535C - Machine for fastening capsules, decorative foil or other cap-shaped items on bottles. : da en
  • FR817271A - Improvements to television receivers : en fr
  • DE649792C - Turning device for internal combustion engines : de en
  • FR817520A - Improvement in hair removal devices : en fr
  • US2091555A - Phonic game : en
  • US2091912A - Displacement meter : en
  • DK53530C - Directions to Bicycles. : da en
  • PL25095B1 - A method for the production of cellulose acetates or other cellulose esters suitable for the direct production of artificial products. : en pl
  • CH192691A - Electric discharge device with a gas-filled discharge tube. : de en
  • PL25109B1 - A method of cooling water, especially condensed water, and an apparatus for carrying out the method. : en pl
  • PL25307B1 - The method of producing condensation products of toluenesulfamide with formaldehyde. : en pl
  • US2091687A - Apparatus for the control of highway crossing signals : en
  • PL25259B1 - The way of passing the threads of rayon rayon : en pl
  • PL25268B1 - Anode battery case, consisting of normal galvanic flashlight batteries. : en pl
  • US2091621A - Grille : en
  • SE90130C1 - Procedure for the preparation of Na-sulphite pulp : en sv
  • US2091730A - Production of active concentrates : en
  • CA368416A - Vegetable slicing machine : en fr
  • GB471148A - Improvements in copying pads : en
  • US2091840A - Vermifuge : en
  • US2091359A - Traffic signal : en
  • PL25151B1 - Metal cap. : en pl
  • PL25196B1 - Device for bending metal profile bars. : en pl
  • US2091268A - Clutch mechanism : en
  • US2091855A - Variable capacitor : en
  • AU101846B2 - Method for photoelectric sound reproducing or recording and apparatus and phonograms therefor : en
  • US2091722A - Ophthalmic mounting : en
  • USD105907S - Design for a shoe or similar article : en
  • CA368466A - Paper or pulp bottle or container : en fr
  • CH192635A - Grinding machine. : en fr
  • DE649889C - Dump truck : de en
  • GB471665A - Improvements in and relating to hydraulic power transmission means : en
  • FR817482A - Process for increasing the lubricating properties of lubricating oils : en fr
  • US2091533A - Automatic measuring device : en
  • PL25277B1 - Method for the production of titanium tetrachloride. : en pl
  • BE422563A - : en fr
  • US2091590A - Voting machine : en
  • US2091764A - Pressure dampener : en
  • AU101855B2 - Improvements in or relating to filtering or thickening apparatus : en
  • DE649780C - Ring brush with adjustable insert in the form of a helical spring arranged in the bristle bundle : de en
  • CH192686A - Three-phase converter with rotating electrodes. : de en
  • DE649646C - Sole tearing machine : de en
  • GB471401A - Improvements in valves for prime movers : en
  • US2091299A - Automatic closing device for sliding garage doors : en
  • CA368329A - Electric flatiron : en fr
  • FR817461A - Hydro-slider device : en fr
  • FR817488A - Process for carrying out the hydrogenation of carbonaceous materials : en fr
  • GB471404A - Manufacture of new amino-acid derivatives : en
  • GB471730A - Improvements in and relating to electric water heaters : en