• CH222510A - Machine for the simultaneous molding of a plurality of plates in cement paste alone, in cement paste and sand or other materials. : en fr
  • CH222568A - Pencil sharpener. : de en
  • CH222514A - Incinerator provided with furnace. : de en
  • AU221441A - Electromagnetic clutch system : en
  • USD133173S - Design for a portable radio : en
  • CH222527A - Weft insertion device for ribbon looms. : de en
  • US2291009A - Production of diastatic material : en
  • US2291031A - Flotation cell : en
  • US2291475A - Airplane multiple control recorder : en
  • USD133249S - Design for a dress : en
  • FR874098A - Process for the preparation of highly polymerized, moldable dyes : en fr
  • PL30717B1 - Electric vehicle axle drive by means of a cardan shaft centered on the vehicle axle : en pl
  • US2291233A - Combination play pen and crib : en
  • USD133237S - Design for a dress : en
  • US2291442A - Upper cylinder lubricant : en
  • US2291300A - Process for providing solvency and toxicity : en
  • USPP535P - Saintpaulia : en
  • CH222503A - Cooking stove designed as a heating stove with an attachment. : de en
  • CH222625A - Machine set consisting of a centrifugal machine and an electric machine. : de en
  • CH222706A - Process for the production of a new anthraquinone derivative. : de en
  • US2291106A - Materials testing machine : en
  • US2290935A - Method of assembling, molding, and vulcanizing elements of lug straps : en
  • US2290865A - Sheet feeding mechanism and method for operating the same : en
  • US2291162A - Method of repairing castings : en
  • US2291216A - Polymerization of olefins : en
  • US2291244A - Telephone system : en
  • US2291277A - Television signal-translating channel : en
  • US2291350A - Protective system for feeder circuits : en
  • CH222681A - Coupling rod with two coupling sleeves that are rigidly connected to one another, which are hinged to the vehicles and whose deflections from the central position are used to dampen the running vibrations of the vehicles against each other. : de en
  • US2291466A - Circuit breaker : en
  • US2291000A - Apparatus for producing multifocal lenses : en
  • US2291056A - Compound hydraulic brake master cylinder : en
  • PL30752B1 - : en pl
  • ES149915A1 - ELECTRICAL STARTING MECHANISM FOR COMBUSTION ENGINES, ESPECIALLY IN AUTOMOTIVE VEHICLES : en es
  • ES150294A3 - A PATCH FOR THE TREATMENT OF TRUSSES, AND, IN GENERAL, OF SKIN MANIFESTATIONS PRODUCED ON THE FEET BY SCRATCHES OF THE FOOTWEAR : en es
  • US2290949A - Production of colored textile and other materials : en
  • US2291338A - Rotary circuit maker and breaker : en
  • DE723259C - Double expansion flap : de en
  • AU115571B2 - Improvements in or relating to facsimile telegraph systems : en
  • CH222739A - Process for the preparation of an aryloxy-alkylamino-butanol. : de en
  • DE723019C - Process for the production of a wound-healing preparation from embryonic substances : de en
  • GB546764A - Improvements in photo-cathodes : en
  • FR874043A - Fuel filter for sprinklers : en fr
  • FR874132A - Device for coupling three-phase networks : en fr
  • CA406428A - Dye and dyeing process : en fr
  • CH222725A - Device on multi-stage centrifugal fans to convert the speed of the conveying medium generated in the rotor into pressure, using diffusers and several spiral housings. : de en
  • CA406411A - Aircraft propeller extended drive : en fr
  • USD133248S - Design for a dress : en
  • GB546831A - A new or improved pumping apparatus for liquids : en
  • US2291048A - Carburetor : en
  • PL30710B1 - Method of magnetic sorting of weakly magnetic iron oxide ores : en pl
  • PL30707B1 - A method for loading upside down originals in drum duplicators and a duplicator for carrying out this method : en pl
  • PL30731B1 - : en pl
  • DE723270C - Procedure for divorce from sugar juices : de en
  • GB546807A - Nut-holding device : en
  • FR874139A - Hydraulic current mechanism, in particular for motor vehicle gearboxes : en fr
  • CH222555A - Sacks, in particular made of paper. : de en
  • CH222600A - Sheet metal cage, in particular for roller bearings, and method for the production thereof. : de en
  • US2291186A - Appliance plug and cord set : en
  • US2291339A - Folding table : en
  • CH222524A - Dishwasher. : de en
  • US2291307A - Production of solvents : en
  • US2291464A - Circuit timing and control device : en
  • DE723057C - Vibration damping system for synchronous motors : de en
  • US2290990A - Load-corner protector and binderstrap support : en
  • DE723205C - Circuit arrangement for filtering out a frequency-adjacent interference frequency : de en
  • ES150346A1 - DEVICE FOR THE DESTRUCTION OF FLIES AND OTHER HARMFUL INSECTS WITH THE AXIS OF A TRAP PERFECTED BY THE PLACEMENT OF A METAL FABRIC : en es
  • US2291369A - Polar carrier telegraph system : en
  • US2291559A - Refrigerating apparatus : en
  • AU216241A - Method and apparatus for coating paper : en
  • DK60009C - Trigger mechanism for in a Made usable automatic Shoulder weapon. : da en
  • FR874235A - Cinematographic camera : en fr
  • US2290920A - Coin operated mailing machine : en
  • DE722921C - Process for the electrolytic production of corrosion-preventing coatings on zinc, cadmium and their alloys : de en
  • US2291370A - Collision guard means for vehicles : en
  • US2291390A - Spring mattress structure : en
  • AU115557B2 - Electromagnetic clutch system : en
  • DE723230C - Arrangement for counting connections of different values in telecommunication systems, especially telephone systems : de en
  • CA406333A - Piston and ring : en fr
  • ES150732A3 - AN ULTRARIGID SUPER UNIVERSAL HEAD MILLING MACHINE FOR LARGE COURSES : en es
  • US2291570A - Oil seal : en
  • US2291587A - Check strap : en
  • FR874192A - Directly heated bimetal trip unit for small currents and large tripping force : en fr
  • FR874247A - Hydraulic remote control device : en fr
  • CH222580A - Measuring transducer. : de en
  • DE723198C - Process for the manufacture of filters for suspended matter : de en
  • US2291069A - Inverter circuit : en
  • ES150168A1 - A PROCEDURE FOR THE FUNCTIONING OF WELL AND SIMILAR CALCINATION OVENS : en es
  • GB546698A - Improvements in or relating to sheet metal panel constructions and spacers or stiffeners therefor : en
  • US2290982A - Telegraph signal automatic manipulator : en
  • FR874246A - Device for accelerating the ignition of certain fuels in industrial fireplaces : en fr
  • ES149762A1 - A NEW PROCEDURE FOR THE MANUFACTURE OF SECATINTAS : en es
  • DE723053C - Process and device for deep freezing : de en
  • DE723267C - Cutting device in machines for producing cigar rolls : de en
  • FR874222A - Arrangement of a v-cylinder air-cooled engine in a split powertrain on rear engine motor vehicles : en fr
  • DE723051C - Process for the preparation of dialkylmalonamide esters : de en
  • ES151085A1 - PROCEDURE FOR OBTAINING SULFONAMID DERIVATIVES : en es
  • ES149545A1 - A TUBE FOR TELEVISION TRANSMISSION : en es
  • FR874119A - Ball bearings : en fr
  • US2291184A - Boxing glove : en
  • CA406393A - Radio tube grid making machine : en fr
  • DE723124C - Self-closing valve for pressure medium containers, especially extinguishing medium containers : de en
  • ES149286A1 - A PROCEDURE FOR THE MANUFACTURE OF A PAIR OF PROFILED IRONS OF SIMILAR PROFILE TO THE TROVÉS, FOR MARKS OF MINING OR SIMILAR ENTIBATION : en es
  • ES149889A1 - IMPROVEMENTS IN MOLDED PLATES OR BODIES RESISTANT TO WEAR, FOR BLINDING TOOLS OR MACHINE PARTS : en es
  • US2290872A - Stabilized liquid hydrocarbon : en
  • USD133233S - Design fok a dress : en
  • USD133256S - Design tor a wrap-around turban : en
  • US2291262A - Stabilization of parasiticides : en
  • US2291482A - Self-hardening welding rod : en
  • US2291115A - Wired music distribution system : en
  • US2291473A - Mothproofing solution : en
  • US2291542A - Box wrapper : en
  • ES149624A3 - IMPROVEMENTS IN THE ARRANGEMENTS TO STORE ITEMS IN WAREHOUSES AND SIMILAR : en es
  • BE446034A - : en
  • CH222499A - Hollow structure. : de en
  • CH222603A - Drive belt for belt drives with conical belt pulleys. : de en
  • US2291421A - Safety apparatus for heating inflammable liquids by conduction at nonigniting temperatures : en
  • US2291532A - Ore reduction apparatus : en
  • US2291467A - Luminescent sign : en
  • FR874207A - Improved arrangement for cooling the oil of air-cooled engines in low profile bodies with engine at the rear : en fr
  • CH222743A - Rotary pump for propelling aircraft. : de en
  • DE723170C - Switching device on a refrigeration machine : de en
  • US2291170A - T-post : en
  • AU115565B2 - Improvements relating to frequency modulation : en
  • PL30767B1 - : en pl
  • US2291411A - Remote control gear shifting mechanism : en
  • US2291203A - Bedcover support : en
  • ES148409A2 - PROCEDURE FOR OBTAINING ACILAMINOSULPHONIC ACIDS SUBSTITUTED FOR HALOGENS : en es
  • DE723115C - Device for darkening rooms : de en
  • ES151096A1 - MOBILE COUPLING BETWEEN MOTOR WHEEL AND UNIAXIAL DRIVE MOTOR : en es
  • AU115570B2 - Improvements in or relating to pumps and seals for pumps andthe like : en
  • DE723070C - Articulated connection between motorcycle and sidecar : de en
  • DE723083C - Device for steering and pivoting guns, cranes, etc. like : de en
  • ES151044A1 - PROCEDURE FOR THE OBTAINING OF TETRACYCLIC COMPOUNDS : en es
  • FR874248A - Compositions based on synthetic resins for the preparation of foundry molds : en fr
  • DE723001C - Ventilation for waterproof clothing : de en
  • PL30727B1 - : en pl
  • FR874205A - Mode of conversion of the power plants of boats operating with low pressure steam, with a view to their adaptation to high steam pressures : en fr
  • DE723093C - Display device for locking the unloading flap of shaft conveyor vessels : de en
  • GB546821A - Improvements in and relating to mechanical power transmission systems : en
  • FR874068A - Refinements to sharpeners with sharp blades : en fr
  • US2291175A - Lightning arrester : en
  • US2291438A - Comb plate : en
  • US2290880A - Ethers of alcohol amines : en
  • US2290934A - Metal cutting tool : en
  • FR874214A - Bouterolle : en fr
  • GB546711A - Improvements in and relating to cylinder locks : en
  • US2291494A - System of lighting and lighting unit for use therein : en
  • CH222578A - Iron-closed dynamometric measuring mechanism. : de en
  • ES149835A2 - A PROCEDURE FOR OBTAINING A BEVERAGE : en es
  • ES151027A1 - PROCEDURE FOR OBTAINING A PRODUCT SIMILAR TO THE RUBBER, FROM THE CARBON : en es
  • FR874208A - Advanced arrangement for cooling oil in internal combustion engines : en fr
  • US2291258A - Resilient stretchable fabric and process of making it : en
  • GB546716A - Production of improved coatings on fabric supports : en
  • US2291015A - Scraper : en
  • US2290994A - Skiving machine : en
  • US2291135A - avery : en
  • CA406311A - Automobile door pull : en fr
  • CA406331A - Electric immersion heater : en fr
  • ES149873A1 - AN APPARATUS FOR MAGNESIUM PRODUCTION : en es
  • GB546815A - Improvements in and relating to methods of making metal-enclosed vacuum tubes : en
  • DE723299C - Frame to convert an existing chair into a wheelchair : de en
  • GB546833A - Improvements relating to roof construction : en
  • ES150932A1 - PROCEDURE FOR THE OBTAINING OF SULPHON DERIVATIVES : en es
  • FR874114A - Carbon blades with metal tip for collectors of electrical machines : en fr
  • DE723123C - Tooth root filler made from a drug carrier that becomes liquid due to heat and is solid at normal body temperature, e.g. B. gutta-percha, paraffin or the like. With wire insert : de en
  • CH222672A - Electric windshield wipers, in particular for vehicles. : de en
  • CH222720A - Process for the production of a condensation product. : de en
  • PL30743B1 - : en pl
  • DE723201C - Double-layer film for lining containers made of concrete, wood, iron or the like. : de en
  • FR874160A - Assembly by threaded members : en fr
  • GB546818A - Process for converting normally gaseous hydrocarbons : en
  • USD133230S - Probst, jr laundrtf stove : en
  • ES150153A1 - A PROCEDURE FOR OBTAINING A CEMENT OF FIRST QUALITY OF THE TYPE OF CEMENT FERRARI : en es
  • CH222597A - Holder for a safety razor and razor blades. : de en
  • CH222613A - Process for converting a compression-ignition engine built for diesel fuels to operation with liquid gas. : de en
  • US2291189A - Power transmission : en
  • US2291498A - Wall and ceiling finish : en
  • US2290889A - Increasing cream viscosity : en
  • US2290969A - Article container : en
  • US2291094A - Electrically lighted creeper transport service unit : en
  • CH222678A - Switching device for bicycle alternators. : de en
  • AU115549B2 - Improvements in and relating to devices for indicating the faulty operation of engines and machines : en
  • CH222575A - Eddy current tachometer. : de en
  • DE723138C - Automatic water drainage device for heatable water tanks : de en
  • DE723244C - Hand-held device for leg injuries : de en
  • PL30730B1 - Siemens-Lurgi-Cottrell Elektrofilter-Gesellschaft m, b, H, bOX J [fiir Forschung u. Patentverwertung, Berlih-Siemensstadt Insulator made of solid material, for introducing a high-voltage cable into gas-filled chambers, especially in electric filters, and surrounded at one end of an insulating liquid : en pl
  • US2290860A - Beneficiation of lubricating oils : en
  • AU221141A - Improvements in or relating to furniture casters : en
  • USD133190S - Design for a wallet : en
  • GB546771A - Velocity modulated electrical discharge tube : en
  • CH222593A - Circular saw with swing-out saw blade, in particular for metalworking. : de en
  • AU402241A - Marling device for navigation instruments : en
  • US2291201A - Cleaning cupreous articles : en
  • USD133195S - Design for a shoe or similar article : en
  • DE723041C - Device for reducing shock in worm gears in straightening machines : de en
  • DE723120C - Arrangement for recording faults in multi-phase power networks : de en
  • DE723286C - Circuit arrangement for suppressing a frequency that interferes with reception : de en
  • CH222501A - Process for the formation of an asphaltic surface for flooring, coatings and the like. : en it
  • DE723111C - Arrangement of two crawler rollers running on a common axis with the roller axis supported by inclined half leaf springs and vertical roller axis guide : de en
  • PL30706B1 - : en pl
  • FR874173A - Cold cathode rectifier operating in high vacuum : en fr
  • DE723104C - Translucent drawing sheet provided with field division and field identification : de en
  • GB546757A - Improvements in tubulous boilers : en
  • US2291082A - Titanium dioxide pigment : en
  • GB546780A - An improved method of and apparatus for fueling internal combustion engines, more especially compression-ignition engines : en
  • ES151048A1 - CAP LAMINATOR : en es
  • BE446255A - : en
  • US2291153A - Egg cleaner : en
  • US2290858A - Compressor : en
  • US2291344A - Apparatus for manufacturing insulated wire : en
  • US2291593A - Operating tool for high tension electric lines : en
  • USD133168S - Design for a game board : en
  • FR874165A - Artificial carbon collector with symmetrical current distribution : en fr
  • DE722909C - Process for the production of acetylene and dry hydrated lime : de en
  • DE723017C - Dust firing with additional gas firing : de en
  • ES150798A1 - POOR GAS GENERATOR BY DIRECT OR REVERSE COMBUSTION SUCTION : en es
  • FR874050A - Power coupling device : en fr
  • FR874090A - Improvements in catalyst production processes and their application to the polymerization of hydrocarbons : en fr
  • DE723096C - Torque measuring device for pendulum-mounted performance brakes : de en
  • GB546796A - Improvements in or relating to film forming apparatus : en
  • US2290899A - Magnetic sound recording device : en
  • CH222684A - Process for operating thermal power plants for driving vehicle propellers with adjustable blades. : de en
  • CH222722A - Device for inserting a roll film in a camera and for switching the same in the camera. : de en
  • USRE22148E - Money rack : en
  • FR874157A - Emission rheostat for direct current remote indicators : en fr
  • GB546823A - Improvements in and relating to anti-aircraft and other guns : en
  • GB546827A - Thermionic periodic wave repeaters : en
  • US2291355A - Starting circuit for electric vapor lamps : en
  • US2290965A - Manufacture of t's : en
  • CA406312A - Electric steam boiler : en fr
  • DE723166C - Labyrinth stuffing box for centrifugal machines, especially steam or gas turbines : de en
  • FR874069A - Acetylene generator : en fr
  • FR874163A - Magnet for material testing : en fr
  • US2291580A - Removable mold insert : en
  • CH222631A - Electric regulator. : de en
  • US2291261A - Apparatus for classifying sheet material : en
  • ES150901A1 - IMPROVEMENTS IN THE MANUFACTURE OF METALLIC SKELETONS FOR QUADRINGS BY INTERLAYED AND ANALOGUE SPRINGS : en es
  • GB546826A - Improvements in parachute pack : en
  • ES151010A1 - IMPROVEMENTS IN APPLIANCES INTENDED TO PRODUCE CLOUDS OF SMOKE : en es
  • ES151033A1 - A PROCEDURE TO OBTAIN ZINC ALLOYS : en es
  • US2291134A - Calculating machine : en
  • ES151060A1 - NEW PROCEDURE, WITH ITS CORRESPONDING DEVICES, FOR THE DRILLING OF LANDS AND ALUMBRAMIENTO DE ARTESIANAS : en es
  • GB546797A - Improvements in or relating to the treatment of rubber : en
  • US2291114A - Headlight tester : en
  • US2291286A - Mining machine : en
  • GB546760A - Improvements in totally enclosed dynamo electric machines : en
  • ES151062A1 - AUTOMATIC APPARATUS FOR ELECTROMECHANICAL RESOLUTION OF REPRESENTATIVE FUNCTIONS IN ABACUS : en es
  • US2291137A - Sealing-wire anchor for bung fittings : en
  • DE723171C - Cooker absorbers for refrigeration machines : de en
  • DE722707C - Process for the preparation of aldehydes by oxidation of ethylene or its homologues : de en
  • DE723062C - As a hand tool trained sand rammer for foundries : de en
  • DE723305C - Movable plain bearing : de en
  • FR874232A - Mixer for all engines using gasoline : en fr
  • GB546756A - Improvements in synthetic resinous compositions : en
  • US2291363A - Refrigerant evaporator : en
  • GB546721A - Frequency modulation receiver : en
  • ES150375A1 - A MACHINE TO CUT THE TALC, IN VARIOUS FORMS AND SIZES, WHICH REPLACES THE CRYSTAL IN THE CLOCKS : en es
  • GB546795A - Improvements relating to clutches : en
  • DK60000C - Lubrication device for internal combustion engines, in particular for Vehicles. : da en
  • DE723049C - Headlights with ventilation system : de en
  • US2291019A - Snap action switch : en
  • US2291366A - Frequency multiplier : en
  • CH222576A - Pressurized air pulse control device with simultaneous control of a pulse counter. : en fr
  • CH222614A - Device on motor vehicles to limit their maximum speed. : de en
  • US2291265A - Display device : en
  • US2291579A - Coded track circuit signaling system : en
  • ES150885A3 - PROCEDURE FOR THE AUTOMATIC CLEANING OF FLITRANT FUME CANVAS : en es
  • FR874158A - Device for assembling two side floats and a bicycle in two different positions : en fr
  • GB546686A - Improvements in or relating to panel members for use in the construction of hollow bodies : en
  • USD133197S - Design for an adsorber : en
  • DE723117C - Key for typesetting machines, calculators, typewriters, cash registers, etc. like : de en
  • PL30736B1 - Wanderer-Werke Aktiengesellschaft, Siegmar-Schonau & M \ 47 / C Roller for writing office machines : en pl
  • US2290984A - Refrigerating apparatus : en
  • US2291323A - Production of solvents from coal tar : en
  • US2290890A - Tube coupling : en
  • US2291439A - Hair clipper comb plate : en
  • PL30702B1 - : en pl
  • FR874099A - Full Core Film Reel : en fr
  • US2290909A - Arrangement for transmitting current impulses : en
  • US2291485A - Two-speed control : en
  • FR874174A - Lens shutter : en fr
  • DE723179C - Regeneration of activated carbon used up during the separation of nitrogen oxides from gases by evaporation with steam : de en
  • DE723247C - Pulsator for milking machines : de en
  • GB546751A - Process for the production of magnesium fluoride : en
  • GB546840A - Improvements in pressure relief devices : en
  • US2291011A - Speed governor : en
  • US2291396A - Condensation product : en
  • USD133204S - Design fob a badge ob similar article : en
  • US2291546A - Precooling device for refrigerator cars : en
  • FR874200A - System for cooling by air of cylinder engines arranged in a line for aerodynamic vehicles with engine at the rear : en fr
  • GB546801A - Improvements in method of coating paper : en
  • DE722868C - Process for the production of Kuepen dyes of the anthraquinone series : de en
  • ES149905A1 - A PROCEDURE FOR THE MANUFACTURE OF A CABLE FOR CURRENTS OF GREAT INTENSITY : en es
  • ES151001A1 - IMPROVEMENT IN THE CONSTRUCTION OF ELECTRIC SHEETS : en es
  • FR874074A - Improvements to rigid soles for shoes : en fr
  • GB546689A - Improvements relating to the manufacture of templates and tools : en
  • GB546810A - Improvements in or relating to devices comprising a high-pressure metal-vapour discharge tube and a reflector : en
  • FR874061A - Cycle direction blocking device : en fr
  • GB546692A - Improvements in brake safety hanger : en
  • GB546740A - Improvements in or relating to rowlocks for rowing and sculling boats : en
  • GB546777A - Improvements in or relating to electrically operated timing devices : en
  • US2291078A - Floating dry dock : en
  • US2291573A - Book index : en
  • ES149858A3 - PROCEDURE FOR THE PREPARATION OF ANTIRYPTOGAMIC PRODUCTS FOR AGRICULTURAL USE : en es
  • PL30760B1 - Electric discharge lamp and the method of its production : en pl
  • US2291006A - Document photographing machine : en
  • US2291538A - Automatic phonograph : en
  • DE723200C - Process for covering solid bodies with tapes made of thermoplastic materials : de en
  • US2290854A - Simulated fat and method of preparing the same : en
  • CA406420A - Twist drill : en fr
  • US2291436A - Universal joint manufacture : en
  • GB546787A - Improvements in or relating to the burning of sulphur : en
  • BE446069A - : fr
  • DE723141C - Method for measuring the change in volume of pasta, especially in baking and baking processes : de en
  • DE723065C - Device for starting injection internal combustion engines operated with difficult-to-ignite fuels : de en
  • US2291520A - Method of purifying zinc concentrates : en
  • BE446144A - Stapling machine : en fr
  • FR874167A - Improvements to rims for bicycle wheels and the like : en fr
  • ES150063A1 - IMPROVEMENTS IN THE MANUFACTURE OF PERMANENT MAGNETS : en es
  • FR874182A - Asbestos-based insulation : en fr
  • ES149551A2 - IMPROVEMENTS IN PATENT NUMBER 148526 : en es
  • US2291531A - Necktie : en
  • ES151066A1 - PROCEDURE TO TRANSFER GLASS PIECES BLOWED OR PRESSED TO THE ARCHES, IN DIFFERENT PLANS : en es
  • CH222639A - Cathode ray tube with a fluorescent screen. : de en
  • FR874236A - Mixing device for forming the feedstock of internal combustion engines and other applications : en fr
  • US2291535A - Power failure protective system : en
  • GB546798A - Improvements in automatic reclosing circuit breaker systems : en
  • GB546739A - Improvements relating to the pivots of tipping bodies on vehicles : en
  • DE723000C - Excavator bucket wheel : de en
  • DK59992C - Maximum switch, especially in the form of a screw plug or an element. : da en
  • DE723015C - Device for heating sheet metal using alternating current : de en
  • DK60001C - Air cooling device for Engines with in Horizontal Plan and opposite Cylinders and with Axial fan. : da en
  • FR874189A - Carbon collectors with blade protective cushions, absorbing tension forces : en fr
  • FR874150A - Receiving apparatus of t. s. f. : en fr
  • US2291077A - Floating dry dock : en
  • US2291337A - Production of wood preserving oil from refined pitch : en
  • DE723216C - Air foam generator : de en
  • US2291155A - Article of bedding : en
  • US2291275A - Mounting plate for window regulator mechanisms : en
  • US2291595A - Yarn dyeing machine : en
  • CA406376A - Suction cleaner bag : en fr
  • GB546791A - Improvements in or relating to electric limit switches : en
  • DK59991C - System for automatic charging of accumulator batteries. : da en
  • GB546746A - Manufacture of transparent sheet material : en
  • CH222702A - Process for the production of a new anthraquinone derivative. : de en
  • CH222734A - Process for the preparation of a derivative of para-amino-benzene-sulfonamide. : en fr
  • US2291090A - Refrigerator : en
  • AU115552B2 - Synchronizing system : en
  • ES151070A1 - AUXILIARY DEVICE FOR LAUNCH OF MAIL : en es
  • AU109841A - An improved method and means of supplying fuel mixtures to an internal combustion engine : en
  • PL30722B1 - : en pl
  • CA406408A - Medicinal preparation : en fr
  • CH222620A - Device for facilitating the starting of engines operated with generator gas, in particular for vehicles. : de en
  • ES151014A3 - IMPROVEMENTS IN THE REELS FOR THE FORMATION OF LOOP WITH THE HAIR : en es
  • US2291044A - Separation or recovery of values from aggregate materials : en
  • US2291449A - Slicing machine : en
  • US2291571A - Landing wheel mounting for aircraft : en
  • GB546800A - Improvements in and relating to hydraulic reducing valves : en
  • USD133165S - Design for a kug : en
  • DE723125C - Wheel cover for the steering wheels, especially streamlined motor vehicles : de en
  • ES151082A1 - A PROCEDURE FOR THE CHANGE OF THE ABSORBENT ENVIRONMENT IN ABSORPTION FACILITIES : en es
  • FR874105A - Cathode ray tube comprising an electrostatic projection lens and apparatus comprising such a tube : en fr
  • FR874009A - Device for lateral guiding of film strips : en fr
  • GB546715A - Improvements in photographic sensitive material : en
  • ES151099A1 - MULTI-CALCULATED DISTRIBUTION FACILITIES FOR ELECTRIC MOTORS : en es
  • FR874194A - Motor-compressor for air and other fluids : en fr
  • US2291260A - Meat slicer : en
  • DE723174C - Device for lining door arches and door pillars on glow and smelting furnaces, in particular on Siemens Martinoefen : de en
  • ES151031A1 - A NEW SYSTEM OF FIXTURES OR HINGES : en es
  • FR874195A - Piston compressor with valves arranged in the side wall of the compression cylinder : en fr
  • US2291173A - Multiple picture projection slide : en
  • GB546736A - Method of and device for manufacturing composite structural members : en
  • GB546778A - Stands for electric heaters and other articles : en
  • CH222582A - Dial. : en fr
  • CH222644A - Insulating implementation. : de en
  • CA406404A - Refrigerator car : en fr
  • CH222666A - Closure for tubes and bottles. : de en
  • CH222728A - Process for the preparation of a derivative of citrazinic acid. : de en
  • US2290856A - Welt support : en
  • CA406330A - Electric condenser dielectric : en fr
  • CA406354A - Luminescent material : en fr
  • CH222540A - Cereal mill in grains. : en fr
  • ES150501A1 - A PRESSURE BODY FOR MINING POINTS, TWO-PARTY COMPOUNDS : en es
  • FR874054A - Device for the production of motive power : en fr
  • US2291409A - Illuminated sign : en
  • US2291128A - Knife and sharpener assembly : en
  • US2291254A - Conversion of hydrocarbons : en
  • CH222692A - Process for the preparation of a monoazo dye. : de en
  • DK60008C - Pick-up roller for use in the manufacture of footwear. : da en
  • CH222496A - Threshing machine with device for adjusting the concave. : de en
  • CH222630A - Toggle switch for low-voltage systems. : de en
  • FR874019A - Liquid for magnetic powder test : en fr
  • DE723025C - Record selector : de en
  • DE723030C - Flicker light advertising device : de en
  • USD133212S - Design for a vase or similar article : en
  • CA406324A - Container closure : en fr
  • DE723137C - Machine for deburring, eviscerating and skinning fish : de en
  • DE723012C - Measuring device with a moving-coil measuring mechanism connected to a rectifier arrangement that is not controlled in a square : de en
  • DE723088C - Arrangement with more than three Braun tubes : de en
  • ES151095A1 - IMPROVEMENT FOR ELECTRIC TRACTION VEHICLES : en es
  • US2291586A - Method of making laminated products : en
  • DE723297C - Oven for heating glass objects : de en
  • ES151002A1 - A PROCEDURE FOR THE MANUFACTURE OF INSULATING PIPES-DRIVERS, REINFORCED, FOR ELECTRIC CHANNELS : en es
  • FR874172A - Spinning or twisting ring : en fr
  • CA406379A - Periodic wave generator : en fr
  • US2291040A - Switching system : en
  • PL30689B1 - Hasler A.-G. Werke fiir Telephonie und Prazisionsmechanik, Bern ^ J Electric device for the automatic dependence of a train on the condition of track signal devices : en pl
  • US2291383A - Ventilator : en
  • USD133217S - Design for a bear vision mirror : en
  • ES150652A1 - IMPROVEMENTS IN THE MANUFACTURE OF DOUBLE CURRENT VAGINAL CANNULAS : en es
  • ES151000A1 - DEVICE TO TREAT OBJECTS OF ALL CLASSES WITH VOLATILE ORGANIC SOLVENTS : en es
  • CH222516A - Device for cleaning floors, walls, ceilings, windows, furniture and the like. : de en
  • DE723165C - Process for the production of naphthenic acids : de en
  • DE723176C - Fan wing made of soft material, e.g. B. rubber : de en
  • CH222627A - Double line for decimeter waves. : de en
  • CA406368A - Thermoplastic material applying apparatus : en fr
  • CA406438A - Spindle for ring spinning, doubling and twisting machines : en fr
  • CH222506A - Firebox dividers. : de en
  • USD133209S - Design for a stapling machine : en
  • DE723105C - Bracket for by means of bayonet-like connecting links to be attached parts, z. B. Interchangeable lenses : de en
  • ES148374A1 - A METALLURGICAL OVEN : en es
  • AU115563B2 - Improvements in or relating tothe manufacture of pompoms andthe like : en
  • CH222690A - Process for the preparation of a ketone of the cyclopentanopolyhydrophenanthrene series. : de en
  • CH222732A - Process for the preparation of a derivative of para-amino-benzene-sulfonamide. : en fr
  • US2291060A - Infusion container : en
  • CH222715A - Process for the preparation of a mixed ester-ether compound from a polyalcohol. : de en
  • US2291312A - Production of refined solvents : en
  • PL30701B1 - : en pl
  • CH222708A - Process for the preparation of a mixed ester-ether compound from a polyalcohol. : de en
  • ES149912A1 - IMPROVEMENTS IN THE MANUFACTURE OF ROOFING FOR BODYWORKS MADE OF MATERIALS COMPRESSED WITH ARTIFICIAL RESINS, PREFERABLY BY LAYERS : en es
  • CA406328A - Container : en fr
  • CA406336A - Steering gear for vehicles : en fr
  • AU218941A - Improvements relating to frequency modulation : en
  • CA406371A - Paper container : en fr
  • CH222635A - Switching device. : de en
  • US2290884A - Blower for internal combustion motors : en
  • US2291432A - Molding composition and plastic material made therefrom : en
  • US2290853A - Reel for photographic films : en
  • US2291451A - Method of cutting glass : en
  • US2290917A - Lens molding press : en
  • US2291103A - Sewage apparatus : en
  • US2291237A - Switch : en
  • US2290879A - Method of handling containers : en
  • US2291347A - Light filter : en
  • DE723042C - Metal edges for skis : de en
  • ES150806A1 - IMPROVEMENT IN THE PROCEDURE OF SIGNALS FOR REMOTE TRANSMISSION THROUGH THE BLIND SYSTEM : en es
  • ES151057A1 - A PROCEDURE FOR THE PRODUCTION OF FATTY ACIDS OF GREAT VALUE BASED ON PRODUCTS OF THE HYDROGENIZATION OF CARBON OXIDE : en es
  • FR874220A - Oil cooling arrangement, in air-cooled engines : en fr
  • CH222605A - Device for closing off and throttling air or gases in pipes and ducts. : de en
  • AU115545B2 - Improved cyclone type separator : en
  • CH222737A - Process for the preparation of an aryloxy-alkylamino-butanol. : de en
  • US2290869A - Inclination responsive switch : en
  • CH222596A - Dry shaver. : de en
  • US2291501A - Differential adjuster : en
  • US2291152A - Guideline light : en
  • DE723023C - glass wall : de en
  • DE723140C - Exchangeable rocking bridge for side bridge glasses : de en
  • DE723005C - Road roller with inclinable roller wheels : de en
  • DE723118C - Notch device for roller switch : de en
  • ES151024A3 - CHANGING SPEEDS FOR BICYCLE : en es
  • PL30765B1 - : en pl
  • CH222553A - Method for distributing the paper pulp fed to the conveyor belt of a paper machine and device for performing the method. : de en
  • CH222617A - A method for using waste heat in a water-cooled combustion engine. : en fr
  • DE723187C - Device for ringing trees : de en
  • DE723273C - Device for the technical utilization of the luminescent light generated by the chemical reaction of gaseous substances : de en
  • GB546845A - Improvements in and relating to electric valve control systems : en
  • DE723077C - Remote control and telecommunications circuit : de en
  • BE446018A - Multi-part membrane loudspeaker : en fr
  • CA406422A - Container : en fr
  • CA406414A - Hydrocarbon oil conversion : en fr
  • CH222598A - Razor blade holder for use by the furrier. : de en
  • ES150314A1 - A NEW DEVICE TO ENSURE THE USE OF CERTAIN ACCESSORIES IN MACHINERY, AND APPARATUS INTENDED FOR USES OF OFFICES, PREFERABLY IN MULTIPURPOSE MACHINES : en es
  • FR874121A - Improvements to cam drive mechanisms : en fr
  • ES150744A1 - AUTOMATIC CLOSURE VALVE FOR TOILET DEPOSITS : en es
  • ES149437A3 - A PROCEDURE FOR THE MANUFACTURE OF A SOFA BED : en es
  • CA406409A - Portable spotlamp : en fr
  • CH222533A - Overmolding device for laundry kettles. : de en
  • DE722997C - Upholstery material : de en
  • DE723239C - Hollow formed radiation body for radiant heating in boilers or the like. : de en
  • AU115553B2 - Marling device for navigation instruments : en
  • CA406421A - Bottle cap : en fr
  • US2291159A - Automobile direction signal : en
  • CH222729A - Process for the preparation of a derivative of citrazinic acid. : de en
  • US2291503A - Control : en
  • US2291544A - Mercury switch : en
  • US2291569A - Oil seal : en
  • GB546832A - Improvements in and connected with the picker spindles of looms : en
  • US2290883A - Adjustable idler wheel : en
  • GB546858A - Improvements in and relating to mechanical power transmission systems : en
  • DE723289C - Three-phase loop winding that can be switched from 9 n to 11 n poles : de en
  • DE723101C - Rolling bearing fastening by means of a clamping sleeve : de en
  • USD133193S - Condon milling machine : en
  • USD133159S - Design for a spotting boaed unit : en
  • CA406413A - Tampon forming machine : en fr
  • GB546819A - Improvements in or relating to tabulators : en
  • ES148526A1 - PRINTED PRINTING PROCEDURE ON STEEL STRAP IN ROLLS AND THE MACHINE INTENDED TO CARRY OUT THIS RECORDING : en es
  • DE723021C - Device for lowering curtains in side slide rails attached to the window frame : de en
  • DE723223C - Discoloration of titanium (4) chloride : de en
  • CA406307A - Electric cooking apparatus : en fr
  • DE723126C - Hydraulic drive device for a machine part to be moved back and forth, in particular the table of a grinding machine : de en
  • PL30725B1 - : en pl
  • US2291257A - Guidebook for interior decorators : en
  • ES150839A1 - AN URDIDOR APPARATUS WITH AUTOMATIC ADVANCE : en es
  • GB546820A - Improvements in or relating to the heat-treatment of spontaneously aged aluminium base alloys : en
  • US2291417A - Approach control apparatus for railway signaling systems : en
  • FR874101A - Gas burner : en fr
  • US2291191A - Medical appliance : en
  • US2291110A - Leakage control for adjustable guide vanes : en
  • DK59993C - Impulse transmitter for electric fences. : da en
  • FR874002A - Improvements to direct reading radiogonometers : en fr
  • US2290948A - Brake control system : en
  • US2291121A - Sewage apparatus : en
  • DE723110C - Auxiliary machine drive for motor vehicle engines : de en
  • FR874045A - Circulation switch : en fr
  • GB546817A - Improvements in bearings : en
  • US2291574A - Method for the chlorination of polymeric compounds : en
  • US2291372A - Intermittent inductive train control system : en
  • DE723220C - Crease hold for sheets when pulling : de en
  • US2291474A - Conveying truck : en
  • US2291378A - Well pumping apparatus : en
  • US2290866A - Lamp : en
  • USD133166S - Design for a leg rest : en
  • ES151042A1 - A MACHINE TO GET IN A CONTINUOUS AND MECHANICAL WAY THE PINS FOR THE INTERACTION OR ASSEMBLY OF MATERIALS, ESPECIALLY WOODS : en es
  • FR874136A - Process for the preparation of benzene derivatives : en fr
  • DE723007C - Arrangement at overcurrent circuit breakers : de en
  • US2290862A - Chewing gum and process of making same : en
  • GB546728A - Improvements in means, especially in measuring and other instruments, for amplifying movement of relatively movable parts : en
  • FR874008A - Modulated high frequency energy receiving device : en fr
  • US2291596A - Geophysical prospecting : en
  • FR874039A - Improved fibrous material and its manufacturing process : en fr
  • DE723241C - Closure for muzzle on travel bags, folders, suitcases or the like. : de en
  • FR874034A - Parachute : en fr
  • US2291415A - Manufacture of organic condensation products : en
  • USD133158S - Behr, jr : en
  • USD133200S - Laundry stove : en
  • USD133238S - Design for a dress : en
  • FR874037A - Ignition system for electric discharge vessels with liquid cathode : en fr
  • FR874117A - Apparatus for reproducing drawings : en fr
  • FR874137A - Process for manufacturing seasonings or products for soups and other similar products : en fr
  • FR874030A - Manufacturing process of water resistant and incombustible intaglio printing inks : en fr
  • FR874145A - Down-distillation gasifier : en fr
  • FR874049A - Closure for belts, straps, bags or other miscellaneous items : en fr
  • FR874096A - Manufacture of permanent magnets : en fr
  • US2291003A - Stationery sheet attaching means : en
  • US2291252A - Air conditioner : en
  • FR874161A - Arrangement of lime kilns and other similar kilns; for continuous carbonization of wood : en fr
  • DE723306C - Straight-way and multi-way valve : de en
  • US2291336A - Method of preparing wood impregnant : en
  • USD133199S - Radio tube base or similar article : en
  • USD133251S - Design for a record holder : en
  • USD133211S - Design for an embroidered trimming or the like : en
  • US2291154A - Calculating machine : en
  • US2291158A - Talking machine for playing a plurality of records in succession : en
  • US2291198A - Electric counting device : en
  • US2291441A - Oil burner starting and control mechanism : en
  • DE723185C - Flow electrode for polarographic analysis : de en
  • FR874184A - Layered resistor based on semiconductors for use in radio-electric engineering, and method of making the same : en fr
  • ES150565A1 - SUBORDINATED ELECTRICAL SYSTEM : en es
  • DE723004C - Pistons for power and work machines : de en
  • ES151091A1 - PROCEDURE FOR THE MANUFACTURE OF LOW WEIGHT HYDRAULIC TILES : en es
  • FR874022A - Process for promoting the disintegration of calcination products containing dicalcium silicate : en fr
  • DE723108C - Procedure for determining the average degree of transparency of transparent originals : de en
  • US2291088A - Combined washing machine and drier : en
  • US2291431A - Accelerator device : en
  • USD133189S - Design for a wallet : en
  • CA406365A - Train sanding device : en fr
  • ES151073A1 - PERFECT PROCEDURE FOR THE CONSTRUCTION OF RADIATORS WITH WATER AND OIL PLOW FOR EXPLOSION ENGINES : en es
  • CH222709A - Process for the preparation of a mixed ester-ether compound from a polyalcohol. : de en
  • DE723224C - Process for the production of reduction products of strophanthidine and its glycosides : de en
  • ES151047A1 - A NEW PROCEDURE FOR THE OBTAINING OF AMMONIUM SULPHATE : en es
  • US2291556A - Liquid treating apparatus : en
  • CA406412A - Washing machine cylinder closure : en fr
  • US2291420A - Propeller shaft manufacture : en
  • ES149432A1 - A PROCEDURE OF EXPLOITATION AND INSTALLATION FOR GAS TURNINAS : en es
  • CA406435A - Sowing machine share : en fr
  • BE445999A - : en
  • CH222537A - Flexible wooden sole. : de en
  • GB546830A - Automatic frequency control for wave-signal receivers : en
  • US2291412A - Combined door-checking and doorholding device : en
  • USD133170S - Brooch or similar article : en
  • GB546768A - Improvements in means for protecting airscrew blades and the like : en
  • FR873919A - : fr
  • GB546842A - Improvements in and relating to otterboards : en
  • DE723243C - Ladder with holding device for a bucket : de en
  • US2291014A - Joint structure : en
  • US2291242A - Weight operated switch : en
  • DE723002C - Process to increase the yield in the Laeuter process : de en
  • PL30733B1 - : en pl
  • PL30699B1 - : en pl
  • US2291123A - Lapping apparatus : en
  • US2291371A - Method and apparatus for cementing liners in wells : en
  • US2291499A - Balancing device for pumping units : en
  • USD133213S - Design for a plate or similar article : en
  • DK59996C - Coffee grinder. : da en
  • US2291141A - Direction signal switch : en
  • US2291468A - Protective device for electrical circuits : en
  • DE723217C - One eccentric drive and parallel guide device for the part of dough molding machines that performs the kneading movement : de en
  • CH222567A - Process for the production of writing media and writing media produced by this process. : de en
  • CH222572A - Measuring tool. : de en
  • GB546766A - Holder or mount device for textile thread cops and like thread packages : en
  • US2291413A - Bone clamping and wire adjusting means : en
  • AU115573B2 - Improvements in or relating tothe retorting of shale for recovery of volatile contents thereof : en
  • ES150288A3 - MANUFACTURE OF A SUBSTITUTE PERFUMERY PRODUCT FOR SHAVING SOAP : en es
  • US2291533A - Trouble finder cable tone device : en
  • CH222612A - Internal combustion engine for pulverulent fuels. : de en
  • CH222565A - Process for the preparation of halide silver emulsions for color photography as well as halide silver emulsion prepared by the process. : de en
  • US2290989A - Communication system : en
  • US2291301A - Process of toxicity induction : en
  • CH222525A - Warping machine. : de en
  • AU217441A - Improvements in folding doors for garages, factories, aircraft hangers, andthe like : en
  • USD133160S - Vending machine or similar article : en
  • US2291284A - Coating composition : en
  • US2291423A - Spraying apparatus : en
  • CA406418A - Machine safety device : en fr
  • CH222606A - Planetary transmission device with satellites formed by rollers. : en fr
  • PL30748B1 - Device for equalizing tensile stresses in pipelines and similar devices under pressure : en pl
  • US2291007A - Electric furnace : en
  • US2291130A - Light-sensitive material and method of making the same : en
  • US2291243A - Pneumatic remote controlled release : en
  • CH222697A - Process for the preparation of a monoazo dye. : de en
  • CA406398A - Well drilling fluid composition : en fr
  • USD133222S - Design fob a lamp : en
  • DE723078C - Frame tiled stove : de en
  • ES151061A1 - UUNA VESSEL MANEUVERED BY THE LUNGS FOR RESPIRATORY APPARATUS : en es
  • FR874219A - Gas cookers : en fr
  • DK59999C - Elastic, Bottle and Powder for the manufacture of liquids or powders intended for its manufacture. : da en
  • US2291525A - Brake shoe assembly : en
  • CA406369A - Chain conveyer : en fr
  • CH222637A - Switching device for power converters. : de en
  • US2290960A - Clamp : en
  • US2291101A - Electromagnetic valve : en
  • USD133162S - Design for a textile fabric : en
  • CH222517A - Device for cleaning dishes. : de en
  • DE723181C - Chute firing with flat grate and lower burnout, especially for small firings and stoves : de en
  • DE723264C - Gymnastics equipment : de en
  • FR874211A - Solderless connections for electric batteries : en fr
  • DE723032C - Height chamber : de en
  • CA406410A - Electrical fixture coupling : en fr
  • AU211741A - Improvements in or relating to electrical measuring apparatus : en
  • CH222502A - Device for heating the air. : en fr
  • CA406357A - Film making process : en fr
  • CA406381A - Statistical data verifying apparatus : en fr
  • CA406341A - Segmental crushing roll : en fr
  • CA406399A - Asphalt composition : en fr
  • DE723136C - Tubular steel seat or lounger without rear legs : de en
  • CA406397A - Chemical mixture separating process : en fr
  • CH222508A - Method and device for dehumidifying air with the aid of fibrous, water-absorbent substances. : de en
  • CH222689A - Process for the preparation of a ketone of the cyclopentanopolyhydrophenanthrene series. : de en
  • US2291401A - Solder flux : en
  • GB546851A - Improvements in or relating to phosphorus copper alloys : en
  • US2291055A - Working platform for derrick masts : en
  • US2291487A - Folding machine : en
  • US2291495A - Lighting fixture : en
  • DE723011C - Phase converter : de en
  • DE723122C - Mill firing with mills arranged below the combustion chamber : de en
  • DE723090C - Process for the preparation of water-soluble monoazo dyes : de en
  • DE723307C - Pressure relief valve : de en
  • FR874087A - Anti-yaw device for vehicle train : en fr
  • CH222574A - Dry gas meter. : de en
  • DE723054C - Cast iron for objects subject to sliding friction, especially for bearings : de en
  • ES149967A1 - SECURITY SYSTEM APPLICABLE TO POWER SOCKETS FOR ELECTRICAL CURRENT : en es
  • FR874183A - Pole wire connection sockets for electric heaters preferably made in the shape of a rod : en fr
  • US2291583A - Overhead door construction : en
  • FR874071A - Dairy products of high nutritional value and method of preparing such products : en fr
  • DE723271C - Depositing device for dough sheeting or cutting machines : de en
  • FR874242A - Composite fuel for supplying internal combustion engines : en fr
  • BE445788A - : en
  • ES151092A1 - A MAGNETIC RECOGNITION DEVICE FOR CHECKING CONTINUITY SOLUTIONS IN THE STRUCTURE OF CERTAIN BODIES, ESPECIALLY CRACKS IN BODIES, ESPECIALLY CRACKS IN CYLINDRICAL BODIES : en es
  • GB546694A - Improvements in or relating to centrifugal separators : en
  • CH222633A - Process for the production of voltage-dependent resistors with a crystalline structure, especially for surge arresters. : de en
  • US2290988A - Process of forming welt shoes : en
  • US2291223A - Heat control for welding devices : en
  • USD133214S - Design for an electric lighting fixture : en
  • GB546707A - Improvements in photographic materials and dyes therefor : en
  • FR874073A - Charcoal oven for all products : en fr
  • BE446108A - : en
  • US2291316A - Method of providing solvency induction : en
  • FR874011A - Reinforced rubber studs and studs : en fr
  • CA406402A - 2-amino-thiazole synthesis : en fr
  • US2291005A - Apparatus for reducing static in textile machines : en
  • DE723219C - Iron pit stamp : de en
  • DE723252C - Shut-off valve : de en
  • FR874144A - Process for the manufacture of a sheath fabric : en fr
  • US2291001A - Electrical socket : en
  • USD133220S - Bowling ball rack for bowling alleys : en
  • US2291443A - Steel roof construction : en
  • US2291230A - Removable spout : en
  • GB546745A - Universal joint : en
  • DK59994C - Method and Shaft generator for simultaneous gasification of coarse-grained and fine-grained fuels. : da en
  • US2291047A - Delayed action towel dispenser : en
  • DE723039C - Machine for pulling in the edges of worn low shoes : de en
  • DE723089C - Arrangement for the amplification of photos : de en
  • GB546811A - Improved closure cap for the cooling systems of internal combustion engines : en
  • GB546859A - Improvements in or relating to re-cocking or re-charging devices for machine guns : en
  • FR874057A - Pump : en fr
  • DE723014C - Inductively heated flow heater : de en
  • FR874085A - Improvements in the manufacture of tools with added and welded cutters : en fr
  • GB546693A - Improvements in or relating to electric carrier wave signalling systems : en
  • GB546847A - Process of separating ores : en
  • ES151079A1 - A HAND GRENADE WITH A FREQUENCY EXPLOSION MECHANISM : en es
  • ES151009A1 - A GENERATOR OF GAS ACETYLENE AT PRESSURE, ADJUSTABLE TO WILL : en es
  • ES151022A3 - A PROCEDURE FOR THE MANUFACTURE OF WHEELS WITH HEMP COVERS OR SOLES FOR USE IN CRASH CARS ON TRACKS : en es
  • ES151049A1 - MEJORS IN THE SUSPENSION OF AUTOMOBILE AND SIMILAR VEHICLES : en es
  • GB546814A - Improvements in and relating to carboard boxes : en
  • DE723109C - Trolley for mobile submersible motor pumps : de en
  • DE723249C - Method for combating plant pests using spray pots : de en
  • US2291547A - Refrigerating apparatus : en
  • CA406390A - Protective coating composition : en fr
  • FR874046A - equipment for voltage regulation in alternating current circuits : en fr
  • GB546722A - Starting of supercharged compression-ignition engines : en
  • DE723114C - Inlet device for the water to be cleaned in treatment plants : de en
  • FR874093A - Apparatus for purifying lubricating oil or other similar applications : en fr
  • US2291207A - Food and bottled beverage carrier : en
  • US2291554A - Adjustable thermostat : en
  • ES150835A1 - DEVICE TO PRODUCE THE SAME NUMBER OF REVOLUTIONS IN ROTARY ORGANS THAT MUST BE COUPLED : en es
  • GB546825A - Improvements in photographic film : en
  • GB546700A - Improved type cleaner : en
  • DE723228C - Automatic control device for electrically powered vehicles : de en
  • CH222705A - Process for the production of a new anthraquinone derivative. : de en
  • FR874067A - Improvements to vane pumps and similar machines : en fr
  • FR874206A - Advanced hood for air-cooled in-line cylinder engine located at the rear of a low profile car body : en fr
  • FR874005A - Film store : en fr
  • US2291109A - Expansion joint : en
  • CH222645A - Arrangement for generating short voltage surges with steep fronts depending on the phase of a clock-generating alternating voltage. : de en
  • ES151020A3 - IMPROVEMENTS MADE IN ZINC ROLLING SYSTEMS : en es
  • FR874168A - Steam power plant for wheeled boats converted to adapt to high steam pressures : en fr
  • ES147221A1 - A processing procedure to obtain a new fruit-based food product. : en es
  • CA406356A - Electric discharge apparatus : en fr
  • FR874027A - Process for obtaining anti-rust coatings and coatings obtained by this process : en fr
  • US2290910A - Semiautomatic press : en
  • FR874035A - Arrangement of parachute lines : en fr
  • CA406334A - Garment pocket protector : en fr
  • CA406358A - Strip film handling apparatus : en fr
  • US2291311A - Process of producing solvents : en
  • ES150237A1 - IMPROVEMENTS IN THE MANUFACTURE OF CARRIAGE BOXES, ESPECIALLY FOR AUTOMOBILE VEHICLES : en es
  • DE723028C - Cantilever disk : de en
  • US2291165A - Motor governor : en
  • USD133181S - Johnston etal clock frame or similar article : en
  • FR874053A - Improvements to so-called constant level inkwells and to the ink bottles intended for them : en fr
  • CA406427A - Sulphur dioxide : en fr
  • CH222673A - Springy wheel. : de en
  • US2291024A - Switching system : en
  • DE723164C - Card holder with transparent protective fold for graduated files : de en
  • US2291507A - Horticultural spray oils : en
  • DE723048C - Device for converting the torque of the wind turbines into frictional heat : de en
  • DE723183C - Finger milling machine : de en
  • PL30741B1 - The method of hydrolyzing cellulose : en pl
  • US2290939A - Clip : en
  • US2290971A - Article container : en
  • US2291086A - Apparatus for testing filamentary or strip articles : en
  • US2291190A - Synchronizing device for cameras : en
  • US2291541A - Toy projector : en
  • CA406389A - Centrifugal governor : en fr
  • CH222607A - Chain change gear. : de en
  • CH222573A - Electromagnetic measuring device. : de en
  • DE723081C - Fire extinguisher with extinguishing fluid under pressure : de en
  • FR874007A - Method giving optical indications of location by the goniometer method : en fr
  • DE723153C - Automatic length and speed control for aircraft : de en
  • US2290904A - Method of forming meter drums : en
  • US2291364A - Control device : en
  • US2291081A - Connecting rod structure : en
  • AU115550B2 - Improvements in and relating to automatic change gears for automatically reducing the speed asthe load increases : en
  • CH222543A - Process for the production of a new condensation product. : de en
  • CH222584A - Clock with stop device. : de en
  • CH222657A - Telephone device with advance payment. : en fr
  • US2291167A - Closed circuit grinding : en
  • US2291293A - Printing ink and short varnish : en
  • US2291368A - Radio tuning device : en
  • PL30709B1 - Deutsche Gold- und Silber-Scheideanstalt vormals Roessler, 'Frankfurt n / M. Electric furnace from melted salt drip : en pl
  • US2291129A - Feeding mechanism for sewing machines : en
  • AU256341A - Improvements in and connected with charcoal kilns : en
  • US2291318A - Producing solvents from refined pitch : en
  • USD133175S - Design for wrapping paper : en
  • CA406370A - Conveyer link : en fr
  • CH222558A - Cardboard box with protective ring. : de en
  • CH222700A - Process for the preparation of a related dye. : de en
  • FR874084A - Transportable carbonization furnace for charcoal making and other applications : en fr
  • DK59998C - Stove with a heat-reflecting plate placed under the burner. : da en
  • FR874014A - Process for the preparation of grain-free originals for reproduction by photographic printing : en fr
  • CH222658A - Circuit arrangement for line selectors in telecommunication systems, in particular telephone systems. : de en
  • CH222711A - Process for the preparation of a mixed ester-ether compound from a polyalcohol. : de en
  • US2290967A - Electron tube : en
  • USD133186S - Design fob a flower mounted lapel watch : en
  • USRE22147E - Method of forming bonded surface : en
  • US2291516A - Selector switch : en
  • US2291004A - Spring structure : en
  • CA406423A - Film developing apparatus : en fr
  • US2291304A - Production of solvents and wood preservatives : en
  • PL30734B1 - The method of processing starch-containing materials : en pl
  • AU182041A - Improved forecarriage construction for cultivator drills and like agricultural implements and draft and steering mechanism therefor : en
  • CA406352A - Radio receiver drive mechanism : en fr
  • BE445785A - : en fr
  • CH222505A - Equipment on combustion systems for the supply of secondary air into the combustion chamber. : de en
  • DE723024C - Device for mixing cold and warm flowing substances by means of a thermostatically controlled valve : de en
  • DE723229C - Circuit arrangement for semi-automatic telephone systems : de en
  • US2291526A - Halomethyl ether ketones : en
  • AU379241A - Improvements relating to engine-driven pumps : en
  • CH222536A - Device for sharpening tailor's chalk and the like. : de en
  • DE723107C - Drive device for the turntable used for winding or wrapping a film tape : de en
  • US2290874A - Adjustable camera support : en
  • US2290986A - Key-set circuit : en
  • US2291552A - Ruler : en
  • US2291309A - Production of solvents : en
  • USD133219S - Display plate for automobiles or the like : en
  • CH222638A - Electric discharge tube and processes for their manufacture : de en
  • US2291214A - Stabilization of oils : en
  • USD133246S - Design for a dress : en
  • US2291067A - Votive light and the like : en
  • US2290898A - Carpenter's horse or trestle : en
  • USD133227S - Design for a chime signal : en
  • US2291489A - Recessed lighting apparatus : en
  • US2290968A - Loud-speaker : en
  • US2291548A - Temperature control battery box : en
  • FR874138A - Monitoring installation for operating devices for gear change mechanisms, in particular for motor vehicles : en fr
  • PL30712B1 - : en pl
  • US2291492A - Support : en
  • CH222518A - Foldable stool. : de en
  • CH222661A - Ultra-short wave arrangement. : de en
  • GB546769A - Improved spark plug insulator : en
  • US2291002A - Printer control relay : en
  • US2291505A - Piston ring : en
  • US2291529A - Flour method : en
  • USD133258S - Design for a coat : en
  • US2291156A - Wheel : en
  • US2291253A - Coupling and universal joint for flexible rods : en
  • FR874013A - Relief developer for silver halide layers for intaglio printing plates : en fr
  • FR874064A - Improvements to electrical alarm and signaling systems : en fr
  • GB546719A - Improvements in and relating to lampshades : en
  • PL30681B1 - N. V. Philips' Gloeilampenfabrieken, Eindhoven Radio receiver with automatic selectivity control : en pl
  • GB546705A - Improvements in and relating to thioketones : en
  • GB546836A - Improvements in and relating to electric valve control circuits : en
  • GB546754A - An improved means for enabling a direct-current voltage proportional to a frequency to be obtained : en
  • DE723061C - Atomizer burners for liquid fuels : de en
  • DE723254C - Double crank drive for rotating grippers of lock stitch sewing machines : de en
  • USD133191S - Design fob a wallet : en
  • GB546854A - Improvements in lock stitch sewing machines : en
  • DE723189C - Pistons for internal combustion engines : de en
  • CA406353A - Wire coating apparatus : en fr
  • FR874062A - Device for actuating an electrically operated chalntier winch : en fr
  • US2290912A - Condenser arrangement : en
  • US2290978A - Warm air furnace : en
  • US2291248A - Sealing means for submersible structures : en
  • DE722935C - Milk transport can : de en
  • CH222668A - Bowden cable switches, in particular for dimming devices on headlights on vehicles. : de en
  • AU115575B2 - Improvements in or relating to pumps : en
  • GB546786A - Improvements in or relating to the manufacture of polymeric materials : en
  • US2290972A - Clock illumination : en
  • US2291397A - Master collet : en
  • US2291239A - Relay : en
  • FR874026A - Process for stabilizing bleaching baths : en fr
  • US2291224A - Selecting system : en
  • US2291351A - Apparatus for feeding and spreading roll material : en
  • DE723037C - Cylinder lock fastening : de en
  • CA406322A - Fastener slider : en fr
  • DE723022C - Storage house for piece goods or the like. : de en
  • DE723159C - High-speed steam engine group for the drive of individual wheel axles, especially of locomotives : de en
  • ES151094A1 - DRIVING FOR LIGHT AND ROAD VEHICLES, WITH ELECTRIC DRIVE : en es
  • GB546762A - Improvements in or relating to spiral retarders for flues : en
  • AU115547B2 - New or improved means or machinery for clearing or excavating ditches : en
  • CA406343A - Swivel chair : en fr
  • CH222564A - Set of accessories for cameras. : de en
  • FR874250A - Improvements to solvent extraction devices : en fr
  • ES149715A3 - TESTING SYSTEM FOR ELECTRIC VEHICLES : en es
  • GB546742A - Improvements in or relating to caps for chimney pots and ventilator terminals : en
  • DE723148C - Key-controlled electro-acoustic musical instrument with mechanical soundproof encapsulated sound generators : de en
  • DE723221C - Boot brush with handle : de en
  • CH222579A - Maximum consumption meter. : de en
  • FR874080A - Container such as tube or flask for various products and its manufacturing process : en fr
  • GB546802A - Improvements in or relating to refrigerator cabinets : en
  • GB546696A - Improvements in or relating to electric soldering irons : en
  • GB546770A - Improved spark plug insulator : en
  • US2290979A - Sandblasting device : en
  • FR873952A - : fr
  • GB546726A - Improvements in seed sowing devices : en
  • DE722872C - Process for the preparation of an agent against foot and mouth disease : de en
  • DE723132C - Process for the preparation of leuco-sulfuric acid esters of anthraquinone-azo dyes : de en
  • FR874102A - Amplitude modulation device : en fr
  • DE723134C - Powder atomizer with rubber ball or pump : de en
  • ES151058A1 - A PROCEDURE FOR OBTAINING VALUABLE WASHING MACHINES, WASHING MACHINES, DISPERSING, EMULGING AND CLEANING. : en es
  • FR874052A - Low strain hardening Thomas steel under cold deformations and its manufacturing process : en fr
  • ES151097A1 - UNIAXIAL DRIVE FOR ELECTRIC TRACTION VEHICLES : en es
  • US2291282A - Fountain brush and tube holder : en
  • US2291462A - Electron gun : en
  • US2291490A - Combined wiring conduit and fluorescent lamp fixture : en
  • US2290976A - Looped textile fabric : en
  • US2291392A - Locking means for studio couches : en
  • US2291584A - Vulcanizing press : en
  • CH222680A - Rail vehicle for high travel speeds. : de en
  • ES150310A3 - A PROCEDURE FOR THE MANUFACTURE OF METAL CLOSURES FOR BAGS AND PURSES : en es
  • US2291208A - Bonding rubber to fibers : en
  • ES149570A1 - A NEW MECHANISM OR EQUIPMENT TO NEUTRALIZE, DRY, DECOLORATE AND DEODOR OIL AND OTHER FAT OILS : en es
  • FR874017A - Process for splitting mixtures of substances with neighboring boiling points : en fr
  • US2291202A - Cleaning cupreous articles : en
  • US2291107A - Socket support for electrical outlet boxes : en
  • US2291457A - Dough strip feed device : en
  • DE723288C - Magnetic electric alternator for bicycles and motorcycles with a sliding shoulder ball bearing attached to the upper end of the armature shaft adjacent to the running wheel : de en
  • FR874141A - Control device for electric engraving devices : en fr
  • AU214441A - Manufacture of artificial leather : en
  • CA406362A - Photoflash synchronizing device : en fr
  • CH222539A - Milking pail. : de en
  • FR874215A - Carburetor improvements : en fr
  • US2290944A - Control device : en
  • US2291435A - Window cleaner : en
  • GB546829A - Improvements in or relating to mine and like haulage or hoisting installations : en
  • FR874209A - electric resistance heating element and its manufacturing method : en fr
  • US2290859A - Beneficiation of lubricants : en
  • US2291382A - Indexing device : en
  • DE722908C - Process for the preparation of tetrakisazo dyes : de en
  • GB546749A - Improvement in visible marking coating for paper : en
  • DE723103C - Method and machine for making a casing : de en
  • US2291050A - Package and method of packaging : en
  • FR874063A - Process and devices for carrying out fluid catalytic reactions : en fr
  • DE723215C - Process for producing synthesis gas : de en
  • GB546783A - Improvements in or relating to the dry distillation of materials in plate, slab, slate or like form : en
  • CH222717A - Process for the production of a condensation product. : de en
  • US2291305A - Joint production of solvents and wood preservatives : en
  • US2291324A - Method of producing impregnants : en
  • GB546784A - Improvements in liquid cooling systems for internal combustion engines : en
  • FR874072A - Powerline signaling device : en fr
  • DE723175C - Heat exchanger with circulating storage bodies : de en
  • US2291111A - Variable speed transmission mechanism : en
  • USD133253S - Design fob a bottle or similar article : en
  • IE16356L - Razor blade packs : en
  • DE722897C - Process for the production of pure conkurchin from the solutions of the holarrhena crude extracts : de en
  • DE723149C - Process for the production of hollow bodies from unshygroscopic material : de en
  • US2290941A - Shoe machine : en
  • US2291105A - Combination radio-recording-communication system : en
  • US2291120A - Power transmission : en
  • DE723258C - Aircraft wing with wing tips influencing the tip vortex to increase lift : de en
  • DE723092C - Process for increasing the delivery volume of multi-stage compressors or compressor systems : de en
  • DE723218C - Autogenous slot burner, especially for surface hardening : de en
  • US2291322A - Producing plasticizers from coal tar : en
  • US2291365A - Circuit controller : en
  • DE723188C - Pneumatic regulator for internal combustion engines : de en
  • ES151074A1 - IMPROVEMENTS IN ELECTRIC WELDERS : en es
  • ES151076A1 - PROCEDURE FOR THE CONSERVATION OF SOLUTIONS OF BASIC ALUMINUM SALTS : en es
  • CH222687A - Shoe with wooden floor. : de en
  • DE723231C - Circuit arrangement for monitoring the conversation time with self-dialing long-distance connections for coin telephones with charge control through switching means in the coin telephones : de en
  • FR874081A - Carburetor for internal combustion engines : en fr
  • CA406434A - Electric furnace for melting glass : en fr
  • CH222704A - Process for the production of a new anthraquinone derivative. : de en
  • US2291010A - Carton feeding apparatus : en
  • US2291174A - Multiple wheel drive assembly : en
  • US2291422A - Fish lure : en
  • US2291133A - Calculating machine : en
  • US2291145A - Method of flexible heating in intermittently operable systems : en
  • US2291549A - Apparatus for wire glass manufacture : en
  • BE446185A - Synthetic rubber resistant to ozone and oil and hardly combustible : en fr
  • US2291240A - Brush making machine : en
  • US2291139A - X-ray apparatus : en
  • US2291263A - Multiple break gas blast circuit breaker : en
  • US2291213A - Manufacture of cellular material : en
  • US2291218A - Nozzle : en
  • USD133194S - Design for a shoe or similar article : en
  • USD133259S - Design fob a table scarf ob similar article : en
  • US2291148A - Pipe hanger : en
  • BE445866A - : en fr
  • US2290857A - Blood taking instrument : en
  • ES151067A1 - IMPROVEMENTS IN THE MANUFACTURE OF WATER HEATERS BY GAS : en es
  • GB546805A - Improvements relating to abrasive articles and their manufacture : en
  • DE723097C - Method and device for determining the utility value of detergents : de en
  • DE723040C - Carts for torpedo transport : de en
  • DK60005C - Suction form and procedure for its manufacture. : da en
  • DE723296C - Temperature sensitive controller : de en
  • FR874113A - Coal collector for electrical machines : en fr
  • PL30704B1 - Amplifier with negative reaction : en pl
  • US2291225A - Wire-stitching machine : en
  • US2291295A - Production of wood preserving impregnants : en
  • USD133163S - Design for a mirrored cabinet : en
  • US2291477A - Bottle carrier : en
  • US2290891A - Flat back binder : en
  • ES151054A1 - IMPROVEMENTS INTRODUCED IN THE MACHINES OF A ROLLER TO PLANCAR THE ROPAM MAKING THEM ALSO SUITABLE FOR THE DRYING OF THEM : en es
  • FR874047A - Method and device for obtaining spiral and at the same time helical envelopes or coatings for conductors and the like : en fr
  • DE699878C - inverted convertible electric machine : de en
  • US2291246A - Volume control : en
  • US2291585A - Process for producing phenol from cyclohexanol and cyclohexanone : en
  • DK60004C - Calcium Supplementary Feed for Poultry. : da en
  • CA406367A - Locomotive brake control device : en fr
  • US2291112A - Pivoted joint : en
  • US2291194A - Insecticide : en
  • US2291306A - Production of solvents : en
  • CH222675A - Support for cycles. : en fr
  • CH222730A - Process for the preparation of a derivative of citrazinic acid. : de en
  • FR874230A - Nozzle filter : en fr
  • US2291515A - Aircraft : en
  • USD133185S - Design for a shirt or similar article : en
  • US2290851A - Slug : en
  • US2290954A - Garment : en
  • GR9928B - LEATHER TREATMENT SYSTEM FOR COMBINED COLORS AND DESIGNS IN VARIOUS IMITATIONS. : el en
  • GB546731A - An improved machine for bunching web material in zig-zag form : en
  • DE723066C - Material feed device on bar processing, automatic turning jaws : de en
  • US2291506A - Vulcanizing press : en
  • CA406426A - Pulp screen : en fr
  • FR874042A - Process for the preparation of 2-methyl-4-ethoxy-methyl-6-oxypiridine derivatives : en fr
  • FR874127A - Manufacturing process for high pressure hoses in hardenable masses : en fr
  • DE723194C - Pressure cooker for sterilizing filled cans or the like. : de en
  • DE723242C - Protective screen against water for working with water in intestinal feasts, fish canning factories, etc. like : de en
  • FR874190A - Process for the manufacture of a coffee substitute, by treating plants, roots, fruit marcs and in particular apple marcs and grape marcs : en fr
  • US2290951A - Device for making concrete pipes by centrifugal action : en
  • DE723206C - Method for determining the position of an aircraft in relation to fixed points on a landing field : de en
  • AU115567B2 - Improvemen in electric cables : en
  • GB546772A - Improvements in or relating to stop valves : en
  • AU212441A - Improvements in liquid dispensing apparatus : en
  • BE445804A - : en fr
  • DK60002C - Blower device for air-cooled Engines with opposite Cylinders. : da en
  • US2291212A - Extruding machine : en
  • US2291379A - Cosmetic cream container : en
  • US2291543A - Automobile air conditioning system : en
  • CA406308A - Lawn mowing machine adjusting means : en fr
  • CH222515A - Cooking stove, especially gas or electric stove. : de en
  • CH222646A - Switching arrangement for converters with mechanically moved contacts. : de en
  • US2291035A - Multiple spindle indexing crankpin lathe : en
  • US2290897A - Arc igniting device : en
  • US2291220A - Ventilating system : en
  • US2291470A - Plaster cast cutter : en
  • US2291313A - Production of superior solvents : en
  • USD133180S - Design for a doll : en
  • BE445856A - : en fr
  • AU220141A - Improvements in or relating to bearings : en
  • CH222740A - Process for the preparation of an aryloxy-alkylamino-butanone. : de en
  • US2291171A - Construction member : en
  • PL30723B1 - : en pl
  • US2291020A - Siding clamp : en
  • CH222643A - Arrangement for switching devices with lifting contacts, such as contact converters, especially inverters. : de en
  • DE723269C - Thread monitor device for slip gate : de en
  • CH222571A - Measuring device that allows mechanical conversion of units of measure. : de en
  • DE722706C - Process for the regeneration of catalysts used for the catalytic conversion of carbon oxide-hydrogen mixtures, in particular for gasoline synthesis : de en
  • US2290870A - Dry cleaning composition : en
  • US2290936A - Internal combustion engine : en
  • US2291196A - Cutter-guiding finger for grinders : en
  • US2291296A - Treatment of high temperature coal tar : en
  • US2291456A - Method of making frame plates for watches and the like : en
  • US2291463A - Movable tub sheet for dry cleaning washers : en
  • DE723265C - Device for rubbing substances on surfaces, especially when waxing skis : de en
  • US2291458A - Relay : en
  • DE723058C - Foldable, ring-shaped iron core for transducers to encompass current-carrying conductors : de en
  • DE723173C - Procedure for guiding aircraft when landing after curves of the same field strength : de en
  • USD133177S - Design for a strainer : en
  • DE723236C - Coil with ceramic coil carrier, the turns of which lie in grooves in the coil body : de en
  • CH222549A - Device for the production of metal coatings. : de en
  • CH222741A - Process for the preparation of an aryloxy-alkylamino-butanol. : de en
  • CH222742A - Vehicle frame. : de en
  • CA406395A - Grease resistant paper : en fr
  • DE721524C - Investment material : de en
  • ES150009A3 - IMPROVEMENTS IN THE PASTA REFINING MACHINES FOR THE MANUFACTURE OF CHOCOLATES AND OTHER PRODUCTS OF HIGH PRODUCTION : en es
  • CA406310A - Gun mounting : en fr
  • US2291469A - Process of preparing azo dyes : en
  • USD133188S - Wilkie surface.grinder : en
  • CH222563A - Elevator for letterpress machines. : de en
  • FR874191A - Device consisting of several pumps mounted in series one behind the other : en fr
  • FR874213A - Process for the production of tannins : en fr
  • CA406332A - Brake beam head : en fr
  • AU421942A - Improvements inthe treatment of residues in sugar manufacture : en
  • CH222650A - Process and furnace for melting and refining glass and other refractory materials using electric current. : de en
  • DE723045C - Belt conveyor : de en
  • ES149859A3 - PROCEDURE FOR OBTAINING ANTI-CRYPTOGAMIC PRODUCTS FOR AGRICULTURAL APPLICATION : en es
  • FR874016A - Callitypie process : en fr
  • CH222588A - Resistance welding machine. : de en
  • CH222619A - Switching device on internal combustion engines for the starter of the same. : de en
  • CA406306A - Adjustable hat : en fr
  • CH222652A - Multi-part insulated frame with cap secured against rotation. : de en
  • FR874001A - Device for the production of the mixture of air and fuel gas for aspirated gas engines, in particular for engines with less than four cylinders : en fr
  • CA406338A - Machine tool indicator : en fr
  • AU180241A - Improvements in or relating to facsimile telegraph systems : en
  • DE723064C - Extensometer for test rods with a mechanical-optical system to enlarge the recording of the measured value : de en
  • US2290926A - Preparation of lactic acid : en
  • FR874134A - Electric machines with carbon collectors : en fr
  • PL30719B1 - N. V. Philips' Gloeilampenfabrieken, Eindhoven High frequency modulated amplifier containing at least one cathode ray tube with an internal resistance large compared to its load : en pl
  • FR874180A - Lantern for signaling road construction sites, blocked streets, trenches, obstacles or wrecks : en fr
  • GB546792A - Improvements in and relating to the reconditioning of welder electrodes : en
  • FR874023A - New shoe with wooden sole : en fr
  • GB546747A - Improvements relating to apparatus for spraying liquids : en
  • GB546702A - Improvements in ventilators for air-raid shelters and other structures : en
  • US2291247A - Airplane seat : en
  • CH222696A - Process for the preparation of a monoazo dye. : de en
  • US2291071A - Connecting device : en
  • US2291157A - Combined bar support and spacer : en
  • US2291259A - Billfold : en
  • PL30698B1 - : en pl
  • DE723196C - Device for attaching films to the film spool core : de en
  • FR874104A - Pant protector : en fr
  • CH222718A - Process for the production of a condensation product. : de en
  • PL30764B1 - : en pl
  • AU212041A - Improvements in and relating to devices for indicating the faulty operation of engines and machines : en
  • CA406315A - Tire casing retreading method : en fr
  • CH222662A - Circuit arrangement which, in conjunction with a radio receiver connected downstream for medium and long waves, enables the wireless reception of short waves. : de en
  • CH222724A - Blockboard. : de en
  • US2291204A - Apparatus for casting metal : en
  • PL30714B1 - Shunting device for pile drivers, pile extractors, deep drilling apparatuses and similar devices : en pl
  • PL30757B1 - Franz Hauber, Vienna ^ ^ Metal gaskets for piston rods or similar machine parts : en pl
  • CH222616A - Process for the production of piston rings for engines. : de en
  • US2291388A - Wall construction : en
  • US2291512A - Pamphlet binder : en
  • FR873902A - : fr
  • GB546790A - Improvements in and relating to the treatment of gases for the separation of suspended particles therefrom : en
  • US2290895A - Spinning bath : en
  • US2291140A - Wallboard : en
  • CH222693A - Process for the preparation of a monoazo dye. : de en
  • CH222710A - Process for the preparation of a mixed ester-ether compound from a polyalcohol. : de en
  • PL30729B1 - Heinrich Lanz Aktiengesellschaft, Mannheim Potato digger with a beater driven by the tractor's coupler : en pl
  • US2290916A - Packing machine : en
  • US2291235A - Quinoline derivatives : en
  • US2291234A - Catalytic conversion of hydrocarbons : en
  • CA406340A - Abrading tool : en fr
  • CH222610A - Nozzle body for free jet turbines. : de en
  • GB546706A - Improvements in or relating to undercarriages for aircraft : en
  • US2291264A - Packaging machine : en
  • ES149942A1 - AN EXPLOSION ENGINE : en es
  • GB546793A - Improvements in and relating to moving coil voltage regulating transformers : en
  • US2291062A - Blade wheel propeller, particularly for watercraft : en
  • CA406385A - Sliced bread conveyer : en fr
  • PL30750B1 - : en pl
  • US2291279A - Rotary pump unit : en
  • US2291510A - Polymerization quenching process : en
  • US2290937A - Hydraulic motor unit : en
  • US2290881A - Halogeno-carboxylic amides : en
  • US2290918A - Drive for film printers : en
  • US2290924A - Pulley : en
  • US2291446A - Heat transfer : en
  • FR874229A - Process for forming anodes in current converter tubes : en fr
  • PL30755B1 - Method of removing hydrogen halide from hydrolysis products : en pl
  • US2291041A - Method of making starch solutions : en
  • US2291211A - Oxidation of ketones : en
  • US2291032A - Vacuum producing apparatus : en
  • US2291325A - Method of inducing solvency and toxicity : en
  • BE445787A - : en fr
  • US2291255A - Chuck : en
  • US2291454A - Animal weaner : en
  • US2290905A - Protective metal covering : en
  • US2291399A - Solder flux : en
  • CA406373A - Lock nut : en fr
  • FR874249A - Folding frame for postcards, photographs, paintings, etc. : en fr
  • GB546844A - Improvements in or relating to circular knitting-machines : en
  • US2290953A - Fluid pressure brake control device : en
  • CH222498A - Composite construction made of concrete and wood. : de en
  • US2290864A - Range finder : en
  • US2291079A - Paper having high wet strength and process of producing the same : en
  • US2291315A - Process of enhanced solvency induction : en
  • ES150984A1 - A PROCEDURE TO TINT AND IMPROVE OR SIMULTANEOUSLY TEXTILE MATERIALS : en es
  • FR874066A - Improvements to the methods and means used for measuring vertical speeds : en fr
  • PL30700B1 - A method for rapidly dewatering rinsed materials, e.g., coal, and an apparatus for using the method : en pl
  • FR874171A - Apparatus for the production of very weak currents for medical treatment : en fr
  • US2291073A - Knife grinder : en
  • DE722890C - Process for the swimming pool treatment of non-sulphidic, in particular oxide ores u. Like. With dry grinding : de en
  • US2291251A - Drill pipe protector remover : en
  • CA406348A - Servomotor control valve : en fr
  • CA406375A - Vehicle wheel : en fr
  • PL30744B1 - S, A. Fonderie Officine di Gorizia, \ Gorizia 'a A. M6> fe iSlUk Washer for securing the nut, the method of its production and a set of tools for performing this method : en pl
  • PL30758B1 - Ringhoffer-Tatra-Werke A. G., Praga Air supply to the engine compartment in a streamlined body with rear engine : en pl
  • USD133239S - Design fob a dress : en
  • US2291562A - Illuminated fluid testing means : en
  • CH222716A - Process for the production of a condensation product. : de en
  • DE723151C - Device for extinguishing Braenden in the production of low-smoke powder, explosives and other flammable or explosive substances : de en
  • PL30740B1 - : en pl
  • US2291349A - Electric valve protective system : en
  • US2291021A - Cellulosic material : en
  • DE722869C - Process for upgrading coumarone resins : de en
  • US2290955A - Treatment of bark : en
  • US2291098A - Lubricating device for sewing machine loop takers : en
  • US2291113A - Corn sheller : en
  • AU115555B2 - Improvements in or relating tothe folding of workpieces : en
  • US2290922A - Preparation of titanium oxide : en
  • US2291231A - Damper control system : en
  • US2291291A - Fluid motor alarm : en
  • US2291299A - Producing solvents and wood preservatives : en
  • DE723034C - Carriages for hands-free weapons in aircraft fuselages : de en
  • DE723147C - Device for opening and closing heavy lids on cleaning and degreasing containers for machine parts : de en
  • DE723192C - Device for fixing connecting rods of motor vehicles for machining the crank bearing : de en
  • ES151083A1 - PROCEDURE TO RAISE THE MOISTURIZING POWER OF MERCY BLEACHERS : en es
  • PL30761B1 - Electric discharge lamp and the method of its production : en pl
  • USD133234S - Design for a dress : en
  • DE723169C - Rotary printer for mirrored originals made of paper : de en
  • US2291030A - Sanitary device for telephone mouthpieces : en
  • US2291222A - Metallurgical process : en
  • US2291285A - Sulphone compound : en
  • USD133171S - Eye protector or similar article : en
  • US2291034A - Hardening means for gears and the like : en
  • US2291143A - Bradenhead : en
  • AU115542B2 - Improvements in and connected with charcoal kilns : en
  • CH222733A - Process for the preparation of a derivative of para-amino-benzene-sulfonamide. : en fr
  • DE723227C - Device for triturating bronze powder on sheets or the like. : de en
  • CH222595A - Injection molding device for hardenable compounds. : de en
  • CA406396A - Hair dressing tool : en fr
  • PL30759B1 - Ringhoffer-Tatra-Werke A. G., Prague Mechanical vehicle with rear engine : en pl
  • US2291360A - Pressure relief device : en
  • US2290983A - Protection valve device : en
  • USD133167S - Design for a display stand : en
  • US2291461A - Liquid phase extraction of glyceride oils and acids : en
  • US2290893A - Apparatus for carbureting air for internal combustion engines : en
  • US2290962A - Brake and propulsion control actuator : en
  • US2291108A - Selective electroacoustical transducer : en
  • US2291303A - Production of wood preservatives from coal tar fractions : en
  • US2291578A - Hydraulic equalizer : en
  • DE723291C - Electrostatic wound or layer capacitor : de en
  • ES150027A1 - IMPROVEMENTS IN THE MANUFACTURE OF TEST LIQUIDS FOR THE MAGNETIC DUST PROCEDURE : en es
  • GB546799A - Improvements relating to instruments responsive to differential pressure : en
  • GB587069A - Improvements in or relating to fuzes for projectiles : en
  • DE723075C - Method for determining the distance according to the back beam principle : de en
  • ES151035A3 - PROCEDURE FOR THE EXECUTION OF CONCRETE PILES FORMED IN THE SOIL : en es
  • PL30696B1 - : en pl
  • US2291434A - Connector and loading coil for electric conductors : en
  • PL30728B1 - : en pl
  • US2291042A - Method of concentrating values and separating magnetic material : en
  • US2291384A - Castor machine oil : en
  • US2290878A - Abrading material and process of making same : en
  • US2291424A - Pump with by-pass valve : en
  • USD133196S - Design for leather or similar article : en
  • CH222497A - Process for the preparation of an insect control agent. : de en
  • US2290867A - Control for power plants : en
  • US2291419A - Recovering nitrogen bases from mineral oils : en
  • US2290861A - Cellulose ethers plasticized with ethers of cashew nut shell liquid : en
  • US2291428A - Ultra high frequency amplifier : en
  • US2291008A - Direct-current arc-welding generator : en
  • US2291560A - Attachment means : en
  • CH222632A - Control switch for motors with at least two switching stages, especially for pole-changing motors. : de en
  • CH222688A - Process for preparing 4,5-pregnene-3,20-dione. : de en
  • US2291564A - Method of assembling cam followers and valve stems : en
  • US2291023A - Double temperature water heating unit : en
  • US2291553A - Paste removal : en
  • CA406392A - Radio relaying system : en fr
  • DE723295C - Shaft-shaped boiler with a dome : de en
  • CH222521A - Collapsible toothbrush with exchangeable brush head. : de en
  • CH222624A - Centrifugal starter motor. : de en
  • CH222634A - Electric switch. : de en
  • DK60006C - Brake body made of Kunstkul with recast Metal frame. : da en
  • US2290958A - Modulating circuit : en
  • FR874021A - Topographic level with automatic horizontal line of sight : en fr
  • ES151036A1 - GAS ENGINE IMPROVEMENTS APPLICABLE TO AUTOMOBILE VEHICLES : en es
  • FR874185A - Gear changing device, in particular for automobiles : en fr
  • ES151011A1 - IMPROVEMENT IN THE PAPER MANUFACTURING PROCEDURE AND ITS DERIVATIVES THROUGH THE APPLICATION OF THE BOUQUET NUCLEUS WITHOUT ITS OUTER FIBER, ONLY OR MIXED WITH OTHER TEXTILE PRODUCTS : en es
  • AU115533B2 - Improvements in liquid dispensing apparatus : en
  • BE446035A - Synthetic resinous compositions : en fr
  • CA406361A - Photoflash synchronizing device : en fr
  • FR874198A - Air intake device for carburettors of air-cooled engines : en fr
  • US2291523A - Piston ring assembly : en
  • GB546839A - Improvements in pressure relief devices : en
  • CH222519A - Hot water generator, in particular for the rapid preparation of coffee, tea and similar brewed beverages. : de en
  • DE723050C - Compressed gas burner : de en
  • CA406386A - Dispensing package for ice cream cones : en fr
  • AU216141A - Improvements relating tothe manufacture of cast surface coated paper : en
  • DE723184C - Externally heated mass cylinder for injection molding machines for thermoformable masses : de en
  • CA406346A - Transmission operating mechanism : en fr
  • USD133179S - Design for an astronomical device : en
  • CH222699A - Process for the preparation of a monoazo dye. : de en
  • AU115572B2 - Improved forecarriage construction for cultivator drills and like agricultural implements and draft and steering mechanism therefor : en
  • US2291269A - Headstock for grinding machines : en
  • US2291217A - Wheel and rim for vehicles : en
  • AU115569B2 - Improvements in folding doors for garages, factories, aircraft hangers, andthe like : en
  • US2291161A - Ball bearing knuckle joint : en
  • DE723168C - Flying drum rotor for axially pressurized overpressure steam turbines : de en
  • DE723202C - Method for the correct positional connection of cover sheets provided with field identification and drawings provided with field identification : de en
  • DE723160C - Device for the transmission of more than one signal aspect to the moving train according to the direct current impulse system : de en
  • GB546841A - Improvements in the protection of metal portions of gas-making retorts : en
  • DE722950C - Ceramic socket : de en
  • AU410742A - Improved cyclone type separator : en
  • BE445949A - : en
  • GB546714A - Improvements in or relating to chimney pots and ventilator terminals : en
  • CH222570A - Ski binding with sideways adjustable toe pieces. : de en
  • DE723172C - Evaporator for refrigeration machines : de en
  • US2290973A - Air conditioning unit : en
  • US2291268A - Production universal grinder : en
  • GB546701A - Improvements in or relating to joints for concrete structures : en
  • CH222723A - Device for converting a direct voltage into a frequency proportional to it. : de en
  • DE723284C - TV recorder with a rod-shaped photocathode : de en
  • ES150873A1 - NEW ADJUSTABLE TUBULAR PUMP : en es
  • ES151069A1 - PROCEDURE FOR THE RAPID LOADING OF POTS IN GLASS OVENS : en es
  • FR874020A - Improvements to friction variable speed drives : en fr
  • FR874025A - Process for the constitution of sound copies at variable density on color films : en fr
  • US2291406A - Cathode ray tube with X-ray absorbing coating : en
  • US2291575A - Bomb sight : en
  • FR874225A - Lubricating device for internal combustion engine valves : en fr
  • GB546856A - Improvements in and relating to mechanical power transmission systems : en
  • GB546781A - Improvements relating to containers in flat folded form capable of being erected and method of packaging material in such containers : en
  • CH222528A - Loom, in particular rapier loom with fixed weft bobbins. : de en
  • DE723074C - Wave force machine : de en
  • ES151040A2 - IMPROVEMENTS MADE IN THE MAIN PATENT : en es
  • PL30749B1 - : en pl
  • US2291065A - Starting rod feed device : en
  • US2291229A - Fluid metering device : en
  • ES149520A1 - A COUPLING FOR ALL KINDS OF CARS AND VEHICLES IN GENERAL : en es
  • CH222523A - Drive for roving machines, spinning machines and the like, with pole-changing three-phase asynchronous motors. : de en
  • DE723158C - Device for practice shooting by means of compressed air from machine guns equipped with a return spring : de en
  • US2291200A - Resilient support for tractor seats : en
  • GB546725A - An improvement in or relating to automatically-threading shuttles for looms for weaving : en
  • FR874103A - Braun tube control system : en fr
  • FR874118A - Removable rabbit stand : en fr
  • ES151021A1 - NEW PROCEDURE FOR MANUFACTURING FELT, WOOL AND HAIR BEADS, BASED ON FLAT FELT : en es
  • CA406432A - Acetic acid processing : en fr
  • US2291391A - Folding bed chair : en
  • USRE22149E - Fuse link thkowout device : en
  • FR874091A - Process for the production of mixed citro-cyclo-hexane-hexol-hexaphosphates of calcium, magnesium, iron, copper, manganese and ammonia soluble in water : en fr
  • GB546733A - Improvement in apparatus for thermally desurfacing metal bodies : en
  • CA406377A - Suction cleaner bag : en fr
  • GB546744A - Improvements in and relating to tobacco pipes : en
  • FR874133A - High voltage current transformer : en fr
  • US2291169A - Nitrocellulose production : en
  • FR874179A - Propelling device for cycles : en fr
  • US2291022A - Electric race timer : en
  • US2291576A - Hose and the like : en
  • GB546834A - A method of making press structures : en
  • GB546765A - Improvements in or relating to indicators and indicator boards for tabulating information : en
  • US2290950A - Storage loading machine : en
  • US2290987A - Air control instrument : en
  • DE723248C - Device for the protection of buildings or the like made of wood and organic materials against termites : de en
  • ES150425A1 - ADJUSTABLE WRENCH FOR TUBES, SPARKS AND NUTS : en es
  • GB546723A - Optical apparatus for use in making drawings showing the bodily posture and carriage of a subject : en
  • GB546804A - Improvements in or relating to corrosion inhibiting means for internal combustion engines : en
  • US2291332A - Solvents from coal tar : en
  • DE723067C - Driver with core tip : de en
  • FR874128A - Electrical assembly, in particular amplifier assembly, comprising an impedance formed by the input impedance of a low-pass or band-pass filter : en fr
  • US2291519A - Process for preparing acylaminomethyl quaternary ammonium compounds : en
  • US2291352A - Machine for making combined shirring and french piping : en
  • DE723098C - Tobacco pipe with removable mouthpiece and a juice chamber provided on the pipe head and divided by a transverse wall : de en
  • GB546755A - Improvement in heel retaining means for shoes : en
  • DK60003C - Drain valve. : da en
  • FR874164A - Cast metal frame carbon body : en fr
  • US2291402A - Latch construction : en
  • US2291408A - Method of manufacturing railroad car axles and the like : en
  • US2291453A - Impulse turbine : en
  • GB546774A - Half-wave velocity modulation electron discharge tube : en
  • CH222534A - Vacuum cleaner. : en fr
  • FR874107A - Process for the treatment of grass molecules for the purpose of increasing and transforming their bread-making, fermentative and fodder qualities : en fr
  • GB546758A - Improvements in or relating to moulding and vulcanising apparatus : en
  • US2291328A - Production of superior solvents : en
  • US2291590A - Electrodeposition of metals : en
  • US2291102A - Bed rail : en
  • US2291289A - Apparatus for making siliceous fibers : en
  • CH222731A - Process for the preparation of 1-methyl-4-phenyl-piperidyl-4-ethyl-ketone. : de en
  • ES151088A1 - IMPROVEMENTS IN GASOGENS : en es
  • US2291298A - Production of solvents and wood preservatives : en
  • CA406335A - Shoe sole : en fr
  • ES151059A1 - A GASÓGENO BASED ON VEGETABLE CARBONS AND MINERALS : en es
  • DE723026C - Measuring device with electrical remote display for small changes in length : de en
  • DE723298C - Seating and reclining furniture made up of a stationary furniture frame and a sofa bed that can be moved to a limited extent : de en
  • CA406344A - Wheel mounting : en fr
  • CA406403A - Film developing apparatus : en fr
  • ES151023A1 - PROCEDURE FOR OBTAINING A BACTERICIDE AND DISINFECTANT PRODUCT : en es
  • DE723195C - Device for the continuous pressing of berries, fruits u. like : de en
  • DE723128C - Cooling system : de en
  • FR874188A - Artificial carbon collectors : en fr
  • GB546759A - Improvements in mountings for machine guns or small cannon on aeroplanes : en
  • US2291058A - Portable machine for cutting marble, ceramics, etc. : en
  • US2291374A - Pressure relief device : en
  • USD133164S - Design for a combined panel : en
  • US2291132A - Packing member for bolted tanks : en
  • US2291280A - Apparatus for applying sealing strips to containers : en
  • USD133257S - Design fob a wrap-around turban : en
  • DE723130C - Electric train sign system for vehicle trains for command transmission : de en
  • US2290997A - Electrolytic device : en
  • DE723084C - Device for the electrical remote display of measured values by means of a rotating contact roller and a contact spring that slides on it and is controlled by a measuring device : de en
  • DE723186C - Press for straw, hay and like : de en
  • US2291256A - Sanitary dispenser : en
  • US2291341A - Expulsion fuse and fuse link for use therein : en
  • US2291426A - Package and wrapper therefor : en
  • FR874088A - Gas mixer, particularly applicable to explosion engines powered by gasifiers : en fr
  • GB546763A - Improvements in tubulous boilers : en
  • CH222511A - Gas generator with downward gasification. : de en
  • USD133205S - Suction cleaner brush or similar article : en
  • USD133231S - Design for a dress : en
  • CA406309A - Grinding or abrading machine : en fr
  • DE723055C - Thermal power drive for vehicles with electrical power transmission : de en
  • US2291367A - Device for warming and reconditioning beer : en
  • FR874115A - Cast mold for shaping man-made substances liable to harden or thermoplastics : en fr
  • US2290875A - Measuring differences of potential : en
  • US2291491A - Combined wiring conduit and fluorescent lamp fixture : en
  • US2291508A - Hobbing machine : en
  • FR874131A - Device for determining the direction of sound sources : en fr
  • DE722893C - Spiral slide : de en
  • DE723079C - Device for cutting car tires : de en
  • PL30721B1 - : en pl
  • US2291205A - Pine oil composition : en
  • DE723162C - Method for adjusting the mechanically coupled tuning circuits of radio receivers, which encompass the same frequency range : de en
  • US2291080A - Method of producing paper having high wet strength and product thereof : en
  • US2291232A - Air circulating attachment : en
  • US2291592A - Electrical rectifier : en
  • FR874177A - Improvements to permanent corrugation processes using exothermic sachets : en fr
  • GB546812A - Improvements in electrically heated wearing apparel : en
  • CH222529A - Loom. : de en
  • GB546709A - Process for the manufacture of butadiene : en
  • ES151089A3 - A BENCH SCREW : en es
  • ES150020A1 - CORONA GUIDE FOR VEHICLES : en es
  • DE723255C - Uncovered letterhead that can be used as printed matter : de en
  • FR874193A - Pressure regulator for gases or liquids : en fr
  • FR874111A - Double tube counter-current heat exchanger device : en fr
  • FR874033A - Parachute with annular airfoil : en fr
  • FR874070A - Device for loading various materials into a fixed or mobile tank box : en fr
  • AU352241A - Improvements in or relating to pumps : en
  • CH222500A - Joint closure for containers and other systems for holding liquids. : de en
  • US2291460A - Metal coating mixture : en
  • US2290913A - Electric discharge tube : en
  • FR874178A - Washing machine : en fr
  • DE723253C - Endless file belt for filing machines : de en
  • US2290886A - Styptic pencil : en
  • US2291267A - Apparatus for producing and applying silvering substances : en
  • GB546767A - Improvements in and relating to refrigerators : en
  • DE723099C - Friction wheel lighter : de en
  • DE723203C - Process for improving the properties of porous building materials and materials : de en
  • DE723145C - Lubricating oil circuit for in-line internal combustion engines : de en
  • CA13323S - Curler comb : en
  • GB546708A - Improvements in photographic materials : en
  • ES151028A1 - IMPROVEMENTS IN THE MANUFACTURE OF NEGATIVE PLATES OF LEAD ACCUMULATORS : en es
  • FR874142A - Trailer device for vehicles with two or more wheels, in particular for agricultural machinery and equipment, for example haymaking machines : en fr
  • ES150233A1 - TRANSMISSION OR CHANGE WITH REPLACEMENT COUPLING WITH FREE RUN : en es
  • US2290943A - Swimming device : en
  • FR874124A - Automatic sales device : en fr
  • GB546849A - Improvements in or relating to a dry contact electric rectifier and rectifier system : en
  • DE723208C - Heavy duty switch : de en
  • FR873901A - : fr
  • GB546782A - Improvements in or relating to containers for commodities and packages thereof : en
  • USD133210S - Design fob a finger ring : en
  • DE723290C - Control transformer, especially for higher frequencies : de en
  • CH222653A - Dressing clasp. : de en
  • US2291294A - Letter opener : en
  • US2291563A - Valve : en
  • DK59995C - Speculum, preferably for veterinary use. : da en
  • CH222669A - Switching device for change gears of motor vehicles. : de en
  • US2290933A - Method of manufacturing metal cutting tools : en
  • US2291319A - Producing solvents from refined coal tar pitch : en
  • US2290914A - Coated pigment and the preparation thereof : en
  • US2290945A - Printing of textile fabrics : en
  • US2290956A - Retarding setting rate of portland cement : en
  • US2291076A - Floating dry dock : en
  • DE722638C - Process for the preparation of aromatic sulfonation products containing alkyl groups : de en
  • DE723069C - Process for the production of cellulose and synthetic resin films, especially for intermediate layers in Braun tubes : de en
  • GB546704A - Improvements in the production of coloured photographic images : en
  • AU215941A - A solution forthe purpose of preserving meat : en
  • US2291527A - Halomethyl ether esters : en
  • PL30768B1 - N. V, Philips' Gloeilampenfabrieken, Eindhoven Beam electron tube : en pl
  • USD133235S - Design fob a deess : en
  • DE723018C - Animalizing agents : de en
  • DE723268C - Sheet pile wall with grooved lock iron : de en
  • DE723127C - Device for automatic switching on of an auxiliary turbine in pumps operated by electric motors or similar systems : de en
  • US2291536A - Car construction : en
  • FR874036A - Improved burner, with lighting gas and other combustible gases giving an explosive mixture with air : en fr
  • FR874110A - Mounting of excited bypass motors : en fr
  • DE722857C - Thermocouple with negative nickel electrode : de en
  • US2290855A - Timber connector : en
  • US2290871A - Machine for dispensing tickets : en
  • US2291430A - Fence post insulator : en
  • DE723213C - Electric discharge vessel in cube shape made of ceramic material : de en
  • US2291486A - Coaster brake : en
  • ES151046A1 - IMPROVEMENTS IN THE MANUFACTURE OF INSULATING MATERIALS : en es
  • GB546789A - Improvements relating to hydraulic vehicle brakes : en
  • ES151056A1 - IMPROVEMENTS IN VERY ACTIVE IRON CATALYSTS TO PERFORM THE HYDROGENATION OF CARBON OXIDE : en es
  • CA406319A - High speed water craft : en fr
  • CH222682A - Traffic lights, especially warning systems at railroad crossings. : de en
  • US2291266A - Cushion and pillow structure : en
  • USD133169S - Design for a brooch or similar article : en
  • DE723235C - Solder for tungsten wires that glow in operation in electrical discharge vessels or incandescent lamps : de en
  • DE723143C - Front end for agricultural machinery and like : de en
  • FR874051A - Carbon bow for electric motor vehicles : en fr
  • ES151065A1 - IMPROVEMENTS IN OR RELATIVE TO DEVICES THAT HAVE CIRCUITS WITH PIEZOELECTRIC CRYSTALS : en es
  • FR874123A - Improvements made to lifting devices, in particular those for clearing tree stumps out of the ground : en fr
  • GB546843A - Improvements relating to linear-dimension gauges : en
  • USD133254S - Design fob a dress : en
  • US2290915A - Gas generation : en
  • US2291236A - Switch : en
  • PL30683B1 - : en pl
  • US2291582A - Tuning mechanism for radio receivers : en
  • USD133192S - Design for a cross : en
  • US2290942A - Method and apparatus for eliminating undesired vegetation : en
  • US2291271A - Dispatcher controlled bank of cars : en
  • CA406318A - Heating appliance : en fr
  • PL30693B1 - : en pl
  • US2291059A - Ironer construction : en
  • PL30715B1 - "ISTEG" Ernst Hoffmann & Co, Wieden Insert for reinforced concrete : en pl
  • US2290907A - Vacuum relay : en
  • US2291407A - Slip clutch : en
  • US2291472A - Floor rack for refrigerator cars : en
  • CA406405A - Refrigerator car : en fr
  • CA406436A - Sowing machine discharge means : en fr
  • US2291249A - Electric motor switch : en
  • US2291026A - Method of producing composite metal products : en
  • CA406374A - Electron discharge device : en fr
  • CA406387A - Seamless hosiery manufacturing apparatus : en fr
  • CH222591A - Device for clamping and pressing of clamping pieces on parts provided with a conical seat. : de en
  • US2290964A - Blade honing machine : en
  • US2291119A - Adjustable mounting : en
  • US2291329A - Process of producing wood preservatives : en
  • CA406425A - Variable pitch propeller control system : en fr
  • USD133221S - Design for a stopper : en
  • CH222556A - Method for manufacturing flexible material containers, and machine for implementing this method. : en fr
  • CH222677A - Vehicle. : de en
  • FR874012A - Articulated wooden sole for shoes : en fr
  • US2290900A - Battery cable fixture : en
  • US2291116A - Cooler construction : en
  • US2291206A - Production of metallic oxides : en
  • US2291437A - Ice tray grid : en
  • US2291479A - Draft controlling device : en
  • DE723033C - Tail unit for tailless aircraft : de en
  • CH222611A - Steam or gas turbine with bearing blocks on which the turbine housing is supported at the same time. : de en
  • CH222685A - Assembly process for caissons. : en fr
  • US2291302A - Production of wood preservatives : en
  • CH222561A - Tabs for files, registries and the like. : de en
  • US2290903A - Domestic hot water tank : en
  • US2291561A - Spring testing apparatus : en
  • PL30720B1 - : en pl
  • CH222602A - Rigid plate link chain group. : de en
  • CH222736A - Process for the preparation of an aryloxy-alkylamino-butanone. : de en
  • US2291136A - avery : en
  • CH222542A - Device for the electrolysis of alkali compounds using liquid metal electrodes. : de en
  • CH222544A - Process for the preparation of 1-methyl-4,5-diaminonaphthalene-1 1-sulfonic acid. : de en
  • CA406329A - Grain drill distributor : en fr
  • DK60010C - The siphon-type cisterns. : da en
  • FR874217A - Arrangement of the powertrain in rear-engined automobiles : en fr
  • CA406429A - Moulding fastener : en fr
  • US2291104A - Amusement device : en
  • US2291591A - Threader for collapsible tube trimming machines : en
  • PL30686B1 - : en pl
  • CA406419A - Motor drive : en fr
  • DE723076C - AC circuit breakers, in particular with switching chambers containing liquids : de en
  • US2290931A - Fluid compressor : en
  • US2291051A - Magneto shielding : en
  • BE446191A - : en
  • CH222601A - Rolling bearing, which is also a locking mechanism. : de en
  • DE723010C - Transformation device for three-phase current with associated dry rectifier for high currents : de en
  • FR874006A - Method for producing color photographic images : en fr
  • PL30763B1 - : en pl
  • CA406400A - Halogenated organic hydroxy compound : en fr
  • CH222714A - Process for the preparation of a mixed ester-ether compound from a polyalcohol. : de en
  • DE722826C - Process for the production of metals, alloys or cast bodies by melting metal compacts : de en
  • CA406305A - Nursing bottle nipple : en fr
  • US2290896A - Dense end mechanism for cigarette machines : en
  • US2291199A - Electric arc welding torch : en
  • CA406323A - Composite transparent sheet material : en fr
  • CH222509A - Electric radiator for heating liquids. : de en
  • CH222735A - Process for the preparation of a derivative of para-amino-benzene-sulfonamide. : en fr
  • PL30769B1 - Radioaktiengesellschaft D, S. Loewe, Berlin-Steglitz Electronic duplicating lamp : en pl
  • AU43341A - Improvements in or relating to pumps and seals for pumps andthe like : en
  • US2291150A - Weighing scale : en
  • US2291074A - Fuel feed system : en
  • US2291245A - Electrical control switch : en
  • CA406326A - Rotary cultivator : en fr
  • DE723256C - Pump, compressor or motor for liquid or gaseous working medium : de en
  • DE723279C - Granulating grate for forced-flow steam generator : de en
  • CA406394A - Arc discharge starting arrangement : en fr
  • US2291588A - Method of hydrocarbon conversion : en
  • US2291033A - Fluid pressure control device : en
  • US2291373A - Combined table and chair : en
  • PL30726B1 - : en pl
  • GB546697A - Improvements in or relating to bonded abrasive bodies : en
  • US2291362A - Refrigerant evaporator : en
  • DE723121C - Sheathed welding electrode : de en
  • DE723131C - High voltage dry transformer, especially voltage transducer : de en
  • DE723199C - Machine for making propellers and the like like : de en
  • CA406350A - Dry cell : en fr
  • US2290892A - Wet magnetic separation : en
  • US2291340A - Electrical switching system : en
  • USD133241S - Design for a dress : en
  • US2291163A - Thermostatic controller : en
  • US2291241A - Multiple clutch : en
  • US2290885A - Respirator and method of making the same : en
  • US2291197A - Slab : en
  • US2291238A - Method and apparatus for producing pellicles : en
  • GB546703A - Improvements in or relating to volume range control systems : en
  • CA406349A - Vegetable fibre bleaching method : en fr
  • DE722834C - Pest repellants : de en
  • DE722933C - Method for denicotinating tobacco : de en
  • FR874231A - Acetylene generator : en fr
  • DE722971C - Process for improving the adhesion of acetyl cellulose lacquers to paper : de en
  • ES149701A1 - IMPROVEMENTS IN SHAVING MACHINES : en es
  • US2290985A - Air conditioning unit : en
  • CA406355A - Radio receiver lead-in : en fr
  • CH222640A - Electrical installation including a vapor current converter. : en fr
  • US2290970A - Article container : en
  • US2291317A - Production of solvents from refined pitch : en
  • US2291400A - Solder flux : en
  • US2291418A - Carburetor : en
  • FR874176A - heat exchanger with tubular coils mounted parallel to each other in a support frame : en fr
  • FR874199A - Device for cooling oil in automobile engines, in particular engines mounted at the rear of the vehicle : en fr
  • DE723044C - One-piece seal consisting of a flat, in particular disk-shaped metal body, preferably made of aluminum : de en
  • ES151026A3 - IMPROVEMENTS IN THE MANUFACTURE OF YARN AND FABRICS WITH THE APPLICATION OF RAMI ONLY OR COMBINED WITH OTHER TEXTILE FIBERS : en es
  • GB546735A - Improvements in and relating to electrically driven auxiliary apparatus for fuel and air supply in boiler houses and the like : en
  • FR874092A - Manufacturing process of flat gaskets for gaskets : en fr
  • USD133247S - Design for a dress : en
  • FR874097A - Electric switch : en fr
  • FR874169A - New method of assembling duralumin or derived metal tubes and resulting new industrial products : en fr
  • DE723177C - Device for producing rayon rolls using a swiveling thread guide : de en
  • FR874010A - Small electrical measuring instrument, especially for airplanes : en fr
  • US2291138A - Centrifugal pump : en
  • DE723046C - Lock device for vacuum container : de en
  • DE723047C - Bearing arrangement for rapidly rotating shafts : de en
  • US2290995A - Carrier construction in toy pistols : en
  • US2291160A - Combination lawn tool : en
  • US2291567A - Thermoelectric control and safety shutoff device : en
  • US2290927A - Steering column gear-shifting device : en
  • AU115543B2 - Improvements in gas producers : en
  • CH222562A - File box with grooved wooden base. : de en
  • GB546688A - An improved maximum average rate indicator : en
  • USD133252S - Design fob a loader : en
  • ES150742A1 - PROCEDURE FOR THE OBTAINING OF SULFONIC ACIDS OF HIGH MOLECULAR WEIGHT : en es
  • US2291387A - Bulk material transporting equipment : en
  • AU115554B2 - An improved method and means of supplying fuel mixtures to an internal combustion engine : en
  • DE723060C - Manufacture of blue pigments : de en
  • DE723087C - Arrangement for the electromagnetic locking of cutable points : de en
  • ES151038A3 - IMPROVEMENTS IN THE MANUFACTURE OF METAL SAWS : en es
  • US2291334A - Process of sustained toxicity induction : en
  • USD133216S - Lighting fixture or similar article : en
  • DE723085C - Process for increasing the yield of acetic acid in the catalytic conversion of acetaldehyde with air : de en
  • US2291013A - Magnetic circuit and method of forming same : en
  • CH222604A - Screw-down valve. : de en
  • BE446049A - Device for artificially producing phonemes electrically : en fr
  • CH222674A - Bicycle air pump with pump hose holder. : de en
  • DE722943C - Process for the preparation of 3-ketocyclopentanopolyhydrophenanthrene compounds doubly unsaturated in ring A : de en
  • ES151098A1 - INSTALLATION FOR THE ELECTRICAL REGULATION OF ENERGY GENERATING MACHINES : en es
  • FR874126A - Valve for inner tubes of vehicles or the like : en fr
  • US2291147A - Chucking mechanism : en
  • US2291440A - Tennis racket molding machine : en
  • US2291496A - Telephone system : en
  • US2290908A - Shampoo : en
  • US2291393A - Method of forming wheel rims : en
  • CH222526A - Thread tensioning device. : de en
  • AU115539B2 - Improvements relating to automatic telephone systems : en
  • US2291288A - Apparatus for dispensing gas : en
  • FR874044A - Compression refrigeration machine : en fr
  • GB546852A - Improvements in spindle carrier locking mechanism for multiple-spindle lathes and lik machines : en
  • USD133243S - Design fob a dress : en
  • US2291093A - Machine for harvesting flax and similar plants : en
  • US2291028A - Fruit juice extractor : en
  • US2291476A - Communication system : en
  • US2291126A - Automatic grain dumping device for weighing scales : en
  • ES150488A3 - AN ELECTRIC TRACTOR, CONVEYOR AND LIFT TRUCK, INTENDED FOR TOWING, TRANSPORTATION AND LIFTING OF GOODS AND CARRIAGES : en es
  • GB546727A - Improvements in lifting slings : en
  • GB546776A - Improvements in or relating to distensible members suitable for operating the brakes of aircraft and other vehicles : en
  • US2291036A - Selecting system : en
  • AU115541A - Improvements in or relating tothe folding of workpieces : en
  • DE722907C - Process for the preparation of monoazo dyes : de en
  • ES150188A1 - A PROCEDURE FOR OBTAINING HYDROCARBONS : en es
  • FR874202A - Switching system for alternating currents : en fr
  • GB546828A - Improvements in wrapping or packing articles for transport or storage : en
  • ES151050A1 - PROCEDURE FOR THE MANUFACTURE OF RADIO-RECEPTION DEVICES, OF GALENA, WITH WHICH A NITRIED HEARING IS ACHIEVED IN SPEAKER : en es
  • CH222671A - Drive device for vehicles that works with compressed air. : de en
  • FR874028A - Assembly comprising a cathode ray tube : en fr
  • FR874059A - Electric lighter : en fr
  • GB546773A - Improvements in electric transformers : en
  • GB546788A - Improvements relating to strapping machines : en
  • GB546860A - Improvements in or connected with building toys : en
  • PL30697B1 - : en pl
  • FR874078A - Method for obtaining crossed windings without the use of a reciprocating thread guide : en fr
  • GB546729A - Improvements relating to the inlet valves of air or gas compressors : en
  • FR874240A - Detergent product replacing soap and its manufacturing process : en fr
  • PL30705B1 - N. V. Philips' Gloeilampenfabrieken, Eindhoven HlMi 6 \ M Electric discharge lamp : en pl
  • GB546857A - Improvements in and relating to mechanical power transmission systems : en
  • DE723157C - Device for clamping the thread when tying sausages : de en
  • DE723257C - HEPA filters with filter walls connected by clamps : de en
  • FR874227A - Flue bricks : en fr
  • DE723113C - Machine for applying glue to workpieces, such as rubber insoles or the like. : de en
  • ES151086A1 - PERFECT PROCEDURE FOR THE MANUFACTURE OF SULFURIZED PERGAMINE PAPER : en es
  • ES151925A1 - IMPROVEMENT IN THE MANUFACTURE OF PAPER AND ITS DERIVATIVES WITH THE APPLICATION OF RAMIO, ONLY OR MIXED, OR COMBINED WITH OTHER CHEMICALS OR TEXTILES : en es
  • AU222641A - Improvements in or relating to spring mattresses andthe like : en
  • US2291054A - Vacuum diffusion pump : en
  • US2291290A - Sheet metal nut : en
  • CA406316A - Girdle : en fr
  • CH222541A - Method and device for heating rotary cookers. : de en
  • CA406416A - Knitted silk fabric processing : en fr
  • CH222557A - Cardboard box laminated on the inside. : de en
  • CH222522A - Closure capsules for containers, in particular for bottles, and methods for producing the same. : de en
  • PL30718B1 - : en pl
  • CA406383A - Die head : en fr
  • CH222659A - Radio receiver with loop antenna. : de en
  • US2290932A - Brake and booster apparatus : en
  • US2291025A - Sleeve construction for garments : en
  • US2291333A - Method of providing solvency induction : en
  • US2291348A - Wall coping : en
  • CH222641A - Arrangement for cooling several mercury vapor rectifiers with air. : de en
  • USD133218S - Apparatus for therapeutic treatments : en
  • CH222531A - Fabric guide device on blind stitch sewing machines for the production of multi-layered parts of clothing. : de en
  • CH222670A - Wheel axle with pinion drive running in an oil bath for the wheels, especially for tractors and trucks. : de en
  • US2290928A - Collapsible tube and protective lining therefor : en
  • CH222618A - Spark plug. : de en
  • CH222608A - Truck control device on cranes. : de en
  • ES151013A3 - IMPROVEMENTS IN THE PREPARATION OF THERMOGEN ELEMENTS NECESSARY FOR HAIR WAVING, FOR DRESSING AND BEAUTY : en es
  • US2290998A - Electrolytic cell comprising filmforming electrodes : en
  • US2290852A - Blank distributing machine : en
  • CH222698A - Process for the preparation of a monoazo dye. : de en
  • ES151090A1 - SEMI-SPECIFIC FLOAT FOR SHIP COMPASSES : en es
  • DE722903C - Remote controlled receiver for wireless messages : de en
  • USPP536P - Buddleia plant : en
  • AU115529B2 - Improvements in and relating to pipe couplings : en
  • DE723144C - Hydraulic adjusting device for the injection timing in fuel injection pumps of internal combustion engines : de en
  • US2290959A - Radio receiving system : en
  • US2290929A - Production of artificial filaments : en
  • US2291226A - Production of polar adsorbents : en
  • US2291335A - Production of wood impregnant from high temperature coal tar fractions : en
  • US2290938A - Goggle : en
  • US2291389A - Silencer for spring structures : en
  • DE723102C - Device for cutting a wire rope by means of a chisel that is flattened on one side like a knife and is guided in grooves : de en
  • GB546730A - Improvements in or relating to safety razor blades : en
  • US2291375A - Preparation of 2-chlorobutene-2 : en
  • DE723210C - Protection device for electrical equipment with surge arrester : de en
  • DE723225C - Process for the production of purified flavanone glycoside preparations from citrus fruits : de en
  • USD133232S - Design for a dress : en
  • US2291043A - Method of and apparatus for disintegration : en
  • US2291057A - Apparatus for making miniature house members : en
  • US2291182A - Endless chain cutter for mowing and harvesting machines : en
  • US2291192A - Insecticide : en
  • USD133236S - Design for a dress : en
  • CH222569A - Ski with tip and tail protection. : de en
  • FR874075A - Improvement in feeding two-stroke engines : en fr
  • FR874175A - Noise damper, designed as a high pass filter : en fr
  • GB546710A - Manufacture of new azo-dyestuffs : en
  • DE723003C - Process for the separation of phenols from hydrocarbon mixtures : de en
  • ES150546A1 - VARIABLE FREQUENCY RADIOPHARMS : en es
  • ES151077A1 - OSCILLATING DISC DRIVE MECHANISM : en es
  • GB546699A - Improvements connected with the control of a.c. commutator motors : en
  • GB546855A - Improvements in or relating to braces and like garment suspenders : en
  • GB546809A - Improvements in or relating to optical-projection apparatus : en
  • FR874004A - Counter : en fr
  • FR874125A - Hot-tensioning process for split piston rings : en fr
  • FR874015A - Process for the preparation of high sensitivity and heat resistant bichromate gelatin layers for photomechanical reproduction : en fr
  • ES151037A2 - IMPROVEMENTS INTRODUCED TO THE SAME OBJECT, CONSISTING OF A GEAR CHANGE SYSTEM WITH TWO CHAINS FOR BICYCLES : en es
  • US2291429A - Cushion construction : en
  • US2291346A - Motor driven fluid pump : en
  • US2291063A - Box making machine : en
  • DE723156C - Handbrake system for motor vehicles : de en
  • FR874166A - Process for preparing a bromide : en fr
  • DE723226C - Process for the separation of paraffin from lignite tar or tar oil : de en
  • US2291405A - Friction clutch : en
  • US2290930A - Magnetic material detector : en
  • AU165841A - Improvements in and relating to pipe couplings : en
  • ES151008A2 - IMPROVEMENTS IN THE OBJECT OF THE MAIN PATENT NUMBER 149404 : en es
  • US2291018A - Draft regulator : en
  • CH222683A - Safety arrangement in railway safety systems of electrically operated railways. : de en
  • DE723052C - Process for the preparation of halogenated tetrahydrofuran pellets : de en
  • FR874055A - Construction, in masonry, of oblique splayings : en fr
  • GB546734A - Means for holding coiled hose pipes : en
  • FR874170A - Clutch, preferably intended for automobiles : en fr
  • US2291455A - Method of making balance wheels : en
  • US2291471A - Spoon molding machine and method : en
  • CH222538A - Workpiece made of rigid material with heel and articulation piece for the manufacture of footwear. : de en
  • CH222701A - Process for the production of a new anthraquinone derivative. : de en
  • US2291127A - Production of tempered glass sheets : en
  • CA406424A - Variable pitch propeller control system : en fr
  • CH222513A - Apparatus for cleaning the gas and simultaneously compressing it for internal combustion engines provided with gas generators. : de en
  • US2290947A - Electrical condenser : en
  • PL30687B1 - : en pl
  • US2291345A - Hydrocarbon nitration : en
  • US2291377A - Settee and armchair : en
  • USD133228S - Design for a chime signal : en
  • US2291095A - Water flotation apparatus : en
  • FR874048A - Process for the separation of regenerated cellulose from its mixtures with natural fibers : en fr
  • CH222594A - Process for processing compositions containing curable synthetic resins by injection molding and apparatus for carrying out this process. : de en
  • US2291518A - Self-centering device : en
  • DE723152C - Air foam generators, in particular for fire extinguishing purposes : de en
  • CH222721A - Process for the production of a condensation product. : de en
  • US2291100A - Deflecting tool : en
  • US2291146A - Boiler composition : en
  • PL30732B1 - : en pl
  • US2291272A - Scoring machine : en
  • US2291046A - Arrangement for burning liquid fuel : en
  • USD133207S - Design for a scale dial : en
  • PL30747B1 - The method of even laying in a mold with a large surface of fine material, then pressed into wall panels, doors or other building parts : en pl
  • US2291278A - Tea or coffee bag : en
  • CA406317A - Valve : en fr
  • CH222548A - Press plate and process for its manufacture. : de en
  • CH222621A - Electric starting device on internal combustion engines, in particular those for motor vehicles. : de en
  • US2290888A - Cellulose activated by liquid ammonia : en
  • AU237141A - Improvements relating to automatic telephone systems : en
  • BE446231A - : en
  • CA406351A - Shuttlecock treating apparatus : en fr
  • US2291177A - Universal mounting for hang rods : en
  • US2291180A - Portable grain bin and loader : en
  • US2291117A - Centrifugal separator : en
  • US2291326A - Process of toxicity induction : en
  • US2291545A - Foundation member : en
  • AU115574B2 - Improvements in or relating to bearings : en
  • ES151063A1 - A PROCEDURE FOR OBTAINING TRIALCALINE PHOSPHATES FROM SUBSTANCES CONTAINING ALUMINUM AND PHOSPHORIC ACID BY SOLUBILIZATION, ALKALINE, HUMID FROM THEM : en es
  • US2291276A - Treatment of hydrocarbon distillates : en
  • US2291509A - Applicator : en
  • CA406342A - Polishing material : en fr
  • PL30684B1 - : en pl
  • US2291164A - Grinding tool : en
  • AU115548B2 - Improvements in or relating to electrical measuring apparatus : en
  • AU115568B2 - A solution forthe purpose of preserving meat : en
  • DE723154C - Safety control device for aircraft : de en
  • DE723006C - Road roller with inclinable roller wheels : de en
  • DE723161C - Route transition signaling device : de en
  • US2291577A - Image amplifier : en
  • US2291376A - Isomerizing hydrocarbons : en
  • CH222583A - Winding and setting mechanism with pulling and direct effect. : en fr
  • ES150717A1 - NEW FLEXIBLE RIM SYSTEM FOR VEHICLE WHEELS : en es
  • CA406364A - Brake mechanism : en fr
  • CH222654A - Collapsible stretcher. : de en
  • US2291084A - Oil burner : en
  • US2291359A - Cooking device : en
  • AU115566B2 - Improvements in and connected with producer gas generators : en
  • DK59997C - Liquid Soap Dispenser. : da en
  • US2291444A - Attachment for beds : en
  • PL30739B1 - : en pl
  • USD133250S - Design foe a dress : en
  • CA406320A - Paper dispenser : en fr
  • GB546687A - Improvements in girdles or foundation garments : en
  • CH222520A - Garment bag. : en fr
  • US2290975A - Leak detecting process and apparatus : en
  • USRE22146E - Alkylation of hydrocarbons : en
  • US2291513A - Hassock : en
  • US2291537A - Method of cutting gears : en
  • US2291581A - Process for treatment of hydrocarbons : en
  • AU115561B2 - Improvements relating tothe manufacture of cast surface coated paper : en
  • CH222532A - A method of making persistent emulsions containing the reaction product of a water-insoluble reactant and a water-soluble reactant. : de en
  • US2291072A - Devotional light : en
  • US2291179A - Culinary implement : en
  • DE723280C - Suction nozzle for sheet feeder : de en
  • US2291227A - Apparatus for perforating rubber sheeting : en
  • CA406437A - Rubber vulcanizing mould locking device : en fr
  • PL30695B1 - A method of producing secondary emission electrodes for electron tubes : en pl
  • US2291539A - Concrete distributing apparatus : en
  • DE723086C - Line pouring machine with return chute for poured hand set lines : de en
  • US2290868A - Apparatus for testing materials with regard to their tensile strength : en
  • AU115562B2 - Method and apparatus for coating paper : en
  • US2291356A - Machine spindle and packing therefor : en
  • US2291386A - Wheel mounting device : en
  • CH222554A - Method and device for temperature control on drying cylinders and rolls of cellulose, paper and similar machines. : de en
  • US2291049A - Valve : en
  • US2291089A - Extension key chain : en
  • BE445870A - Apparatus for the distillation and concentration of liquids by using the heat released by the vapors which condense : en fr
  • CH222628A - Cable ring with fasteners. : de en
  • AU115530B2 - Manufacture of artificial leather : en
  • ES150423A1 - NEW WIND MILL : en es
  • FR874108A - Automatic winding device for watch mechanisms : en fr
  • US2291572A - Assorting mechanism : en
  • CH222727A - Process for the preparation of a derivative of citrazinic acid. : de en
  • US2291210A - Temperature regulating system : en
  • FR874106A - Method of manufacturing funds for converters : en fr
  • GB546748A - Improvements relating to the cutting of articles from plastic materials : en
  • PL30703B1 - : en pl
  • US2291125A - Finger support : en
  • US2291459A - Loud-speaker : en
  • US2291530A - Machine and method for manufacturing porcelain balls : en
  • DE723285C - Optical arrangement for projecting an image onto the screen of a television transmitter tube : de en
  • GB546712A - Improvement in valve : en
  • US2291250A - Vacuum cleaner : en
  • US2291308A - Production of solvents : en
  • DE723016C - Rubbing grate for room stoves : de en
  • DE723237C - Arrangement for the detection of magnetic metals by a coil through which an alternating current flows, whose self-induction change is controlled by an indicator tube : de en
  • FR874212A - Material for the manufacture of friction brakes and friction couplings : en fr
  • FR874109A - Method and device for machining air propeller hubs : en fr
  • DE723234C - Emergency air drive for electrical switchgear : de en
  • ES151078A1 - SWITCH WITH ELECTRIC ARC EXTINCTION THROUGH PRESSURE GAS CURRENT : en es
  • GB546750A - Improvements in manifolding materials : en
  • ES149911A1 - A PROCEDURE FOR ELABORATING COLOMBIAN SOAPS IN A SOLID AND NON-STICKY FORM : en es
  • FR874223A - Arrangement of torsion bars for the suspension of half-axles with central box or tubular beam : en fr
  • CA406360A - Enlarging paper holder : en fr
  • GB546761A - Improvements in and relating to metal brackets : en
  • FR874156A - Bimetal blade, more especially for automatic releases : en fr
  • DE723251C - Ignition system for internal combustion engines with radio interference suppression : de en
  • ES150657A1 - IMPROVEMENT IN THE MANUFACTURE OF WATCHES FOR CLOCKS, IN THEIR DIFFERENT SIZES AND WAYS : en es
  • GB546717A - An improved clothes peg : en
  • FR874224A - Cover for engine chamber in motor vehicles at the rear : en fr
  • USD133255S - Design fob a dress : en
  • DE723013C - Heating and ventilation system : de en
  • US2290911A - Glass body : en
  • US2290887A - Tire changing tool : en
  • US2291414A - Self-closing safety pocket : en
  • GB546741A - Improvements in inner tubes for wheel tyres and method of manufacture : en
  • US2291083A - Furnace construction : en
  • US2291178A - Hanger : en
  • DE723222C - Method and device for the continuous leaching of substances, for example substances containing oil : de en
  • DE723266C - Footwear with a role for the rolling movement of the wearer : de en
  • DE723281C - Device on typewriters for writing on copy sheets : de en
  • US2291118A - Steam generator : en
  • CH222587A - Lifting device on presses for non-cutting metalworking. : de en
  • US2290921A - Fuel injection system : en
  • AU200141A - Improvements in solid resilient tyres : en
  • US2291478A - Centrifugal pump : en
  • US2291511A - Rotary washing and drying machine : en
  • FR874086A - Improvements to boules games : en fr
  • DE723150C - Control device for automatic activation of the ventilation device for smoke-filled rooms : de en
  • DE723214C - X-ray system with a device for generating high-voltage direct current : de en
  • ES151064A1 - A PROCEDURE TO PRODUCE A METALLICLY CLEAN SURFACE IN OBJECTS TO BE PROVIDED FROM A METALLIC COVER : en es
  • FR874155A - Attachment of sets of auxiliary components to internal combustion engines : en fr
  • GB546785A - Improvements in or relating to the production of pigmented compositions : en
  • USD133225S - Design for a pennant ok- the like : en
  • USRE22145E - Treatment of fabrics : en
  • US2290919A - Film printer drive : en
  • US2291465A - Circuit breaker : en
  • FR874038A - Lock piece activating a latch bolt : en fr
  • GB546684A - Improvements in or relating to the manufacture of panel units for walls, partitions and the like : en
  • GB546685A - Improved method of and means for drying wood and like materials : en
  • ES151029A1 - IMPROVEMENTS IN GASOGENS FOR INTERNAL COMBUSTION ENGINES : en es
  • US2291484A - Apparatus for automatically assembling nuts and bolts : en
  • USD133184S - Design fob an electric ikon : en
  • CH222507A - Device for ventilating a workroom. : de en
  • DE723211C - Winding for transformers and reactors : de en
  • US2291209A - Electrolytic unit : en
  • FR874065A - Improvements to the installations of engines supplied by gasifier and comprising a compressor : en fr
  • US2291270A - Brake for controlling rotary motion : en
  • US2291070A - Connecting device : en
  • US2291380A - Fishing craft : en
  • USD133244S - Design for a dress : en
  • DE723031C - Method and film for copying mechanically recorded soundtracks with lens effect : de en
  • US2291176A - Cabinet supporting structure : en
  • USD133202S - Lapel button or similar article : en
  • US2291099A - Method of making toothed bars : en
  • US2291385A - Control apparatus : en
  • US2290952A - Production of colored textile and other materials : en
  • PL30690B1 - Radio Corporation of America, New York, N.Y. A circuit containing an electron tube and an electron tube suitable for this : en pl
  • US2291085A - Treatment of washing water : en
  • US2291566A - Electrical connecting device : en
  • CH222636A - Electrical contact converter. : de en
  • US2291445A - Method of and apparatus for conditioning condensers : en
  • USD133224S - Vavrik etat. surface treating machine : en
  • DE723139C - Device to compensate for fluctuations in brightness of the light source of a photoelectric photometer : de en
  • GB546752A - Improvements in gratings more particularly for improvising trafficbearing surfaces : en
  • US2291144A - Reversible hoe : en
  • US2291398A - Collet : en
  • DE723008C - Installation of a low-oil, horizontally arranged liquid switch in a high-voltage line system in connection with an air breaker : de en
  • ES151019A1 - PROCEDURE FOR OBTAINING ALLOYS OF GRAY CAST IRON, TEMPERED CAST IRON OR GROSS IRON : en es
  • FR874216A - Arrangement of the introduction of cooling air to the engine in rear-engined automobiles : en fr
  • CA406366A - Brake cylinder device : en fr
  • US2291185A - Shelf bracket : en
  • US2291488A - Direct lighting luminaire : en
  • US2291522A - Heating oils : en
  • GB546822A - Regulation of catalytic activity : en
  • CH222642A - Device for mounting an ignition electrode in an electric steam valve. : en fr
  • ES151072A1 - PROCEDURE TO OBTAIN A NEW ALLOY INTENDED TO WELD METALS : en es
  • GB546806A - Preventing singing in telephone repeaters : en
  • FR874056A - Further training in liquid spraying devices : en fr
  • AU220041A - Improvements in or relating tothe retorting of shale for recovery of volatile contents thereof : en
  • PL30716B1 - Method of dyeing the surface of objects made of cement : en pl
  • GB546775A - Improvements in closure caps for fuel tanks and like containers : en
  • USD133226S - Design for a cigarette holder : en
  • CH222550A - Process for coating elongated metallic objects with aluminum. : de en
  • CA406347A - Prime mover dynamo plant : en fr
  • CA406372A - Lime slaker : en fr
  • US2291273A - Power conversion method and apparatus : en
  • AU240041A - Improvements inthe manufacture of self-locking nuts : en
  • CH222577A - Electrical measuring and testing equipment. : de en
  • CH222552A - Process for the manufacture of acid-resistant paper machine felts. : de en
  • ES149332A1 - A SYSTEM OF FLOATING PROTECTION AND SALVAGE IN WATER : en es
  • CA406339A - Machine tool shaft protecting means : en fr
  • PL30754B1 - Ringhoffer-Tatra-Werke A. G.f Praga-Smichov Motor vehicle with front non-driven swivel wheels : en pl
  • US2291122A - Gyratory crusher : en
  • US2291281A - Package : en
  • US2291404A - Lubricant : en
  • DE722992C - Electrical insulating body for high frequency purposes made of ceramic material : de en
  • DE723246C - Glass attachment for upright glazing : de en
  • US2290957A - Process for treating gaseous mixtures : en
  • US2291039A - Production of quilts : en
  • AU115551B2 - Improvements in or relating to spring mattresses andthe like : en
  • CH222726A - Small refrigeration machine with encapsulated, electric motor driven piston compressor. : de en
  • DE722961C - Process for the production of pressed powders : de en
  • FR874024A - Footwear improvements : en fr
  • CH222664A - Fitting element. : de en
  • ES151087A1 - A PROCEDURE TO DESILIZE THE WATER : en es
  • AU220641A - Improvements in or relating tothe cleaning of fluid heaters by elastic cleaning fluid and to cleaners for fluid heaters : en
  • CH222566A - Ballpoint pen. : en fr
  • CH222665A - Flexible material container. : en fr
  • CA406359A - Photographic darkroom lamp : en fr
  • CA406380A - Motor driven nibbling tool : en fr
  • US2291558A - Frequency monitor : en
  • DE723301C - Multi-storey conveyor basket : de en
  • ES150203A1 - A COUNTERCURRENT STEEL WASHER : en es
  • DE723191C - Turning tool holder with a turret head : de en
  • DE723233C - Litz switch for heating pad : de en
  • DE723038C - Sharpener for pencil leads : de en
  • DE723068C - Elastic saddle tree : de en
  • DE723080C - Adding machine : de en
  • GB546837A - A process for the production of hypohalous acid solutions : en
  • ES151007A1 - PROCEDURE FOR THE OBTAINING OF HYDROGEN OR NITROGEN MIXTURE, ESPECIALLY FOR THE SYNTHESIS OF AMMONIAC : en es
  • GB546813A - Improved support for fire hose : en
  • FR874201A - Device for the construction of the cylinder stiffening fins of internal combustion or combustion engines cooled by air : en fr
  • CH222622A - Device for thermal control of the refrigerant circulation in refrigeration systems. : de en
  • DK60007C - Filling pen. : da en
  • ES151055A3 - PROCEDURE FOR OBTAINING MAGNESIA CARBONATE, WITH SIMULTANEOUS PRODUCTION OF AMMONIUM SALTS : en es
  • FR874032A - Adjusting device for bringing an object with imperative movement into a prescribed position using a tracking index device : en fr
  • GR9925B - TYPE OF ELECTRODE INVOLVEMENT BY ELECTRIC WELDING. : el en
  • GR9927B - WOODWOOD TIRE TIRE. : el en
  • DE723209C - Circuit breaker with a liquid flow to extinguish the arc : de en
  • ES151003A1 - A GASOGEN OF COMBUSTION DIRECTED DOWN : en es
  • FR874210A - Inhaler device : en fr
  • FR874186A - Attachment of elongated construction elements to parts with flat faces, and method for producing it : en fr
  • FR874244A - Process ensuring rapid hardening and waterproofing of materials : en fr
  • US2291504A - Diaphragm cutoff valve : en
  • DE722870C - Process for the production of highly concentrated solutions from Dammar : de en
  • FR874147A - Amphibious motor vehicle : en fr
  • CA406407A - Tubing manufacture : en fr
  • USD133229S - Combined medal and identification tag : en
  • FR874196A - Engine assembly mounting device on automobiles with engine at the rear : en fr
  • GB546732A - Improvements in and relating to electric discharge devices : en
  • DE723163C - Water reserve : de en
  • ES146903A1 - Procedure for the manufacture of alkaline silicates in powder form. : en es
  • FR874221A - Fitting the front axle, in vehicles with a rear engine : en fr
  • DE723009C - High-performance switch with a differential pump device used to extinguish the arc : de en
  • DE722852C - Method of sealing vessels using pressure : de en
  • ES151039A1 - IMPROVEMENTS IN THE MANUFACTURE OF A SOAP SUBSTITUTE : en es
  • DE723043C - Device for remote control of toys using a pressure ball : de en
  • FR874058A - Electric contactor : en fr
  • DE657070C - Typewriter with type carriers that can be swiveled parallel to the writing surface : de en
  • US2291410A - Relay : en
  • GB546737A - Improvements relating to electric flash welding : en
  • US2290925A - Heat control for welding machines : en
  • US2290963A - Thermal responsive device : en
  • FR874076A - Blade for safety razors : en fr
  • US2291215A - Combination cap and container : en
  • FR874130A - Injection nozzle : en fr
  • GB546695A - Improvements in or relating to soldering apparatus : en
  • GB546824A - Improvements in and relating to vehicle coupling devices : en
  • DE723204C - Device for the continuous saturation of sugar juices : de en
  • FR874148A - Condensation products and process for preparing these products : en fr
  • CH222648A - Electrode installed in an insulated manner in a metal vacuum discharge vessel, in particular a mercury vapor converter. : de en
  • US2291361A - Ferrous sheet material and method of and apparatus for hardening ferrous sheet material : en
  • US2291493A - Lighting fixture : en
  • US2290876A - Process of making abrasive grains, and the product thereof : en
  • DE723245C - Hand-held device for leg injuries or people with a handicap in the hip joint or mobility : de en
  • FR874233A - Method of mechanical measuring and sorting of ampoules fitted with tips : en fr
  • DE723261C - A pencil sharpener that can be attached to a fountain pen : de en
  • FR874120A - Lubricating device for air-cooled internal combustion engines : en fr
  • CH222609A - Impeller and process for its manufacture. : de en
  • FR874237A - Acetylene generator for powering automotive vehicle internal combustion engines and other applications : en fr
  • GR9926B - WHEELING LIGHTING SYSTEM ALLOWED THE PROJECTION OF LIGHT TO THE DIRECTION OF TURNING, CURVES AND OTHER DANGEROUS TO PASS. : el en
  • DE723112C - Bank-shaped seat, especially for land, water and air vehicles : de en
  • US2291589A - Garment : en
  • US2290946A - Formaldehyde-urea adhesive : en
  • US2291066A - Lubricant : en
  • US2291283A - Automatic control system : en
  • US2291297A - Production of preservative wood impregnants : en
  • USD133174S - Design for a comb or similar article : en
  • USD133187S - Design for a slipper : en
  • CH222535A - Gaiters, especially for skiers. : de en
  • US2290993A - Resilient rail spike : en
  • US2291038A - Coffee granulator : en
  • US2290991A - Fuel combustion method and means : en
  • FR874029A - Process for making iron or steel or articles with a surface of iron or steel stainless : en fr
  • FR874077A - Coupling for rotating shafts : en fr
  • FR874187A - Spool comprising an axial advance of the thread, in particular for the continuous treatment of the rayon : en fr
  • FR874031A - Relays and in particular swing armature relays : en fr
  • FR874129A - Circuit in which the operating voltage is taken from the secondary winding of a saturated transformer, the primary winding of which is connected, in series with a capacitor, to an alternating current source : en fr
  • US2291075A - Carton opener : en
  • US2290923A - Automotive suspension : en
  • US2290974A - Direction finding system : en
  • US2291219A - Adjustable papee cle : en
  • ES150109A1 - A PROCEDURE TO PREPARE A LEAD METAL CONTAINING ALKALI AND ALKALINE-THERAPEUTIC SUBSTANCES, FOR BEARINGS : en es
  • FR874122A - Motorized leveling scraper, hand driven : en fr
  • GB546753A - Improvements in electric fuse elements : en
  • US2291433A - Molding composition and plastic materials made therefrom : en
  • US2290877A - Porous abrading material and process of making the same : en
  • AU216341A - Improvements in or relating tothe manufacture of pompoms andthe like : en
  • US2290996A - Art of electrolytic cells comprising film-forming electrodes : en
  • ES151071A1 - DISPOSITION TO MAINTAIN A CONTINUOUS TENSION IN A CONSUMER : en es
  • AU284741A - Synchronizing system : en
  • DE756275C - Test stand for testing vehicle tires in running tests : de en
  • GB546743A - Improvements in and relating to yarn intended for incorporation with rubber in tyresand other goods and the manufacture thereof : en
  • PL30708B1 - Adjustable propeller : en pl
  • US2291061A - Method of improving the dyeing properties of artificial textile materials : en
  • AU115535B2 - Method of packing eggs and container for their transport : en
  • CA406388A - Granular material conveyer : en fr
  • AU115537B2 - Improvements in or relating tothe cleaning of fluid heaters by elastic cleaning fluid and to cleaners for fluid heaters : en
  • CH222585A - Process for the manufacture of machine parts exposed to sliding stress. : de en
  • CH222655A - Disinfectants. : de en
  • CH222663A - Deflection coil system for cathode ray tubes. : de en
  • US2291500A - Thermostat control : en
  • CH222592A - Device on sheet metal shears to adjust the cutting angle. : de en
  • AU110541A - Improvements in and relating to automatic change gears for automatically reducing the speed asthe load increases : en
  • FR874226A - Manufacturing process, by electric resistance welding, of structural steel parts, in particular trellises, and parts thus obtained : en fr
  • PL30738B1 - Fides Gesellschaft fur die Verwaltung und Verwertung 'von gewerblicherr Schutzrechten mit beschrankter Haftung, Berlin Modulator for alternating current telegraphy devices : en pl
  • US2291188A - Apparatus for forming composite curved printing plates : en
  • US2291342A - Electric valve circuit : en
  • DE723212C - Protection device for step transformers : de en
  • CA406378A - Sulphur oil : en fr
  • CA406433A - Liquid organic mixture dehydrating apparatus : en fr
  • DE723155C - Device for the automatic release of a parachute package lock : de en
  • FR874146A - Railway track tamping machine with electrically driven air pump : en fr
  • US2291450A - Antenna system : en
  • PL30742B1 - A method of accelerating the drying of wood and similarly structured plant materials : en pl
  • US2291045A - Synchronizing arrangement for detonation detectors : en
  • PL30713B3 - : en pl
  • PL30711B1 - Method of disconnecting electric stoves : en pl
  • US2291052A - Printing cellulose acetate : en
  • DE723197C - Oil pressure regulator for an engine : de en
  • DE723263C - Device for the production of large bobbins from sensitive thread material : de en
  • ES149682A1 - A HYDROCORRECTOR FOR THE PROCEDURE OF ZEOLITES, MUILTIBULAR, ROTARY, AUTOMATIC REGENERATION AND CONTINUOUS FUNCTIONING : en es
  • DE723094C - thermostat : de en
  • ES151017A1 - PROCEDURE TO ELIMINATE THE PHOSPHORUS SULFUR AND OTHER IMPURITIES OF CASTED METAL MASSES, FOR EXAMPLE, IN GROSS IRON AFFIXATION : en es
  • US2291193A - Insecticide : en
  • US2291483A - Lubricator : en
  • US2290980A - Apparatus for treating liquids : en
  • US2291087A - Pneumothorax device : en
  • DE723304C - Process and device for the temperature treatment of membranes and similar molded parts with an irregular surface made of beryllium-copper alloys that cannot be smoothed by re-rolling : de en
  • US2291321A - Catalytic production of wood preservative : en
  • CH222586A - Stamp with replaceable working part for pressing hollow bodies open on one side, in particular internal combustion engine pistons. : de en
  • PL30682B1 - : en pl
  • GB546835A - Improvements in press structures for hydraulic presses : en
  • PL30751B1 - Heinrich Toussaint, Berlin and Bochumer Eisenhiitte Heintzmann & Co., Bochum Two-piece iron mine stamp : en pl
  • US2291327A - Process of producing solvents : en
  • US2291357A - Electric circuit breaker : en
  • US2291427A - Coffee maker : en
  • USD133172S - Combined innersole and outersole and heel for a shoe or similar article : en
  • DE723106C - Camera film control crank : de en
  • CH222589A - Method and device for producing the sheaths of cables from aluminum tape. : de en
  • DE723073C - Floating ship holding cross for holding ships in locks : de en
  • BE446159A - : en fr
  • US2290873A - Windshield suspension : en
  • US2290992A - Diversity receiving system : en
  • CA406382A - Wheel rim forming apparatus : en fr
  • BE445782A - : en fr
  • CH222623A - Cross-flow plate heat exchanger. : de en
  • CH222713A - Process for the preparation of a mixed ester-ether compound from a polyalcohol. : de en
  • CH222686A - Bracket for blinds. : de en
  • US2291343A - Holder : en
  • CH222546A - Process for coloring organic solvents, oils, technical fats, waxes, resins, lacquers, synthetic materials and products made from them. : de en
  • CH222615A - Hydraulic control device for automatically influencing the amount of fuel supplied in vehicle injection engines. : de en
  • FR874162A - Template frame for printing films with fusible fixing rod and gauze fixing method : en fr
  • CH222707A - Process for the preparation of a mixed ester-ether compound from a polyalcohol. : de en
  • CA406384A - Plastic material extrusion device : en fr
  • USD133206S - Design for a scale dial : en
  • PL30737B3 - : en pl
  • PL30735B1 - : en pl
  • PL30685B1 - Liquid flow meter, especially for commercial use : en pl
  • US2291017A - Method of making insoles : en
  • US2291331A - Solvents from coal tar : en
  • CH222691A - Process for the preparation of a monoazo dye. : de en
  • DE722873C - End distance delay circuit : de en
  • GB546779A - Improvements in or relating to metallic coatings and their application to the surfaces of magnesium and magnesium rich alloys : en
  • GB546794A - Improvements in fuel and oil tanks for aircraft : en
  • CH222649A - Electrical capacitor with connection device, in particular for interference suppression purposes. : de en
  • US2291053A - Testing device : en
  • US2291528A - Halomethyl ethers : en
  • US2291557A - Wheel mounting : en
  • US2290894A - Toothbrush : en
  • US2291124A - Vehicle ventilating and heating system : en
  • US2291425A - Switch and signal control system for railroads : en
  • USD133215S - Design fob a flag or similar article : en
  • AU115538B2 - Improvements in or relating to furniture casters : en
  • US2291027A - Paper testing machine : en
  • DE723207C - Ultra-short wave signal arrangement for securing vehicles with reduced visibility : de en
  • US2290966A - Distributor : en
  • FR874095A - Manufacture of permanent magnets : en fr
  • GB546690A - Improvements in means for controlling the excitation of synchronous dynamo-electric machines : en
  • BE445964A - : en fr
  • US2291068A - Inflatable safety device : en
  • US2291403A - Halogenated hydrocarbon product : en
  • US2291358A - Insect bait holder : en
  • CA406415A - Machine tool guide cover : en fr
  • DE722940C - Process for the saccharification of cellulose : de en
  • CA406417A - Packaging method : en fr
  • AU211641A - New or improved means or machinery for clearing or excavating ditches : en
  • CH222679A - Luggage racks for bicycles. : de en
  • AU276641A - Improvements in gas producers : en
  • USD133208S - Design for a store front : en
  • US2291092A - Control system for vapor-electric valves : en
  • US2290961A - Desulphurizing apparatus : en
  • US2291292A - Catalytic cracking : en
  • PL30691B1 - : en pl
  • DE723020C - Depilatories for cosmetic purposes : de en
  • US2291016A - Railway brake : en
  • US2291228A - Vacuum evaporator : en
  • USD133198S - Cocktail shaker or similar article : en
  • CA406401A - Halogenated organic hydroxy compound : en fr
  • AU115564B2 - Improvements in and relating tothe driving control of internal combustion engines equipped to use a plurality of fuels such as producer gas and petrol orthe like : en
  • CH222694A - Process for the preparation of a monoazo dye. : de en
  • CH222695A - Process for the preparation of a monoazo dye. : de en
  • FR874041A - Supply device for internal combustion engines : en fr
  • ES149521A1 - AN AXIS BALLESTA FOR ALL KINDS OF CARS AND VEHICLES IN GENERAL : en es
  • ES151004A1 - A PROCEDURE TO PREPARE A GAS PURIFYING MASS : en es
  • PL30756B1 - Ringhoffer-Tatra-Werke A. G., Prague Vehicle with rear engine : en pl
  • US2291381A - Display fixture : en
  • US2291517A - Selector switch : en
  • CA406391A - Cathode ray tube electrode : en fr
  • US2291354A - Rotary pump : en
  • US2291497A - Telephone system : en
  • PL30746B1 - A method of spraying e.g. paints or varnishes and a spray head for applying this method : en pl
  • PL30753B1 - A method of separating the strands of synthetic fibers into monofilaments, and an apparatus for carrying out the method : en pl
  • US2291534A - Method of making refractories : en
  • DE723119C - Arrangement to prevent false triggering of relay devices with short delay times : de en
  • CH222590A - Automatic metal lathe. : en fr
  • PL30724B1 - The Linde Air Products Company, New-York, N.Y. Conductive mass on the fusible silicate layer in contact with the workpiece and electrode : en pl
  • US2291064A - Showcase subbottom : en
  • CA406321A - Engine heater electric switching apparatus : en fr
  • CH222547A - Heat-resistant hydrocarbon oil. : de en
  • FR874203A - Method and apparatus for telegraphic transmission, more especially for carrier current with dual current characteristic : en fr
  • GB546691A - Improvements in skip hoists : en
  • DE723071C - Tissue for forming targets : de en
  • DE723193C - Bass mechanics for harmonicas : de en
  • CH222559A - Marks on index sheets. : de en
  • CH222560A - Base grate for filing boxes. : de en
  • DE723300C - Basket lock for conveyor wagons : de en
  • CH222530A - Web shooter driver for undercutting exchange chairs. : de en
  • CH222599A - Pliers. : de en
  • USD133182S - Solenoid firing mechanism for machine guns : en
  • US2291310A - Production of solvents : en
  • CH222581A - Device for measuring DC voltages of small magnitudes. : de en
  • CH222651A - Contact device for an electric melting furnace. : de en
  • CH222667A - Elbow for conveying lines for powdery and granular products. : de en
  • CH222719A - Process for the production of a condensation product. : de en
  • US2291480A - Blower : en
  • AU115544B2 - Improvements relating to engine-driven pumps : en
  • CH222629A - Arrangement for the transmission of angles of rotation for the purpose of remote control of devices. : de en
  • PL30766B1 - : en pl
  • US2291149A - Sterilized package : en
  • US2291514A - Hand scraper : en
  • CH222551A - Process and plant for evaporation of waste eye from pulp production. : de en
  • US2290906A - Manufacture of coloring matters of the phthalocyanine series : en
  • US2291168A - Advertising device : en
  • DE723135C - Jig for tents : de en
  • ES151012A1 - PROCEDURE FOR THE MANUFACTURE OF WOODEN BEDS WITH METAL, COMBINED : en es
  • US2291166A - Lubricant : en
  • DE722941C - Process for bleaching bast fibers : de en
  • CH222504A - Building heating system. : de en
  • CH222647A - Capacitor. : de en
  • PL30688B1 - N. V. Philips Gloeilampenfabrieken, Eindhoven J (Secondary emission electrode tube : en pl
  • US2290999A - Electric discharge vessel : en
  • DE723129C - Ignition device for the ignition flame of an absorption refrigeration machine : de en
  • FR874079A - Large area cooler for gasifier vehicles : en fr
  • GB546838A - Improvements in or relating to indicating or measuring instruments : en
  • CH222660A - Tunable concentric Lecherkreis. : de en
  • CH222712A - Process for the preparation of a mixed ester-ether compound from a polyalcohol. : de en
  • FR874218A - Wheel for agricultural vehicles : en fr
  • FR874204A - Nitro dyes and their preparation process : en fr
  • CA406363A - Photoflash synchronizing device : en fr
  • US2291447A - Apparatus for mechanically separating mineral mixtures : en
  • US2290977A - Circuit breaker : en
  • CH222703A - Process for the production of a new anthraquinone derivative. : de en
  • DE723100C - Safety device for aircraft engine power regulator : de en
  • AU115416B2 - Improvements in solid resilient tyres : en
  • US2290863A - Gasoline economizer for combustion engines : en
  • CH222738A - Process for the preparation of an aryloxy-alkylamino-butanone. : de en
  • AU216941A - Improvements in and relating tothe driving control of internal combustion engines equipped to use a plurality of fuels such as producer gas and petrol orthe like : en
  • CH222545A - Acetyl cellulose varnish. : de en
  • US2291521A - Method of purifying zinc concentrates : en
  • AU395641A - Improvemen in electric cables : en
  • PL30745B1 - : en pl
  • US2291142A - Weighing scale : en
  • US2291353A - Suction cleaner : en
  • USD133245S - Design fob a dress : en
  • DE723036C - Shoot bolt lock for double doors : de en
  • GB546718A - Improvements in means for preventing forgeries of tickets and the like : en
  • FR874159A - Air motor-compressor unit used to act on the boundary layer of aircraft and composed of an internal combustion engine cooled by the air and a fan driven by it : en fr
  • GB546846A - Improvements in cathode-ray tubes : en
  • AU216641A - Method of packing eggs and container for their transport : en
  • ES150513A3 - A PROCEDURE FOR FILLING CAST MOLDS FROM ONE SIDE WITH SEVERAL DRINKERS : en es
  • ES151075A1 - A FURNITURE FOR ARCHIVE, SWIVEL, ELECTROMECHANICAL FUNCTIONING, THAT ALLOWS THE QUICK REFERENCE OF RECORDINGS ACCORDING TO ITS CLASSIFICATION NUMBER : en es
  • USD133161S - Design for a table top : en
  • US2291151A - Clutch : en
  • AU115546B2 - Improvements inthe treatment of residues in sugar manufacture : en
  • US2291131A - Temperature control for driers and other heat exchange elements : en
  • USD133203S - Design for a lathe tool : en
  • US2291416A - Resinous composition of matter : en
  • CA406314A - Tire casing retreading method : en fr
  • ES149790A1 - AN ELECTRICAL HEATER FOR WATER HEATING : en es
  • US2291037A - Distress signal : en
  • AU115540B2 - Improvements inthe manufacture of self-locking nuts : en
  • DE723063C - Completion of fuel opening for ovens and stoves : de en
  • DE723072C - Process for drying and ventilating grainy material, especially grain : de en
  • DE723142C - Device for determining target speeds, in particular of aircraft : de en
  • USD133242S - Design fob a dress : en
  • DE723059C - Electrode heater for flowing media : de en
  • DE723167C - Gap seal on vane wheels of centrifugal machines, especially steam turbines : de en
  • CA406337A - Amphibious vehicle : en fr
  • CH222626A - Device for the automatic connection and disconnection of reactive power generators of various sizes. : de en
  • USD133176S - Design for a shoe sole : en
  • FR874082A - Improvements to taps : en fr
  • US2291187A - Match box dispenser : en
  • US2291452A - Colored organic pigment : en
  • US2291029A - Refrigerating apparatus : en
  • ES150983A1 - A PROCEDURE TO MANUFACTURE A PRODUCT TO WASH AND CLEAN : en es
  • ES151006A1 - IMPROVEMENTS IN GLASS POLISHING APPLIANCES : en es
  • FR874089A - Method and apparatus for the separation of grape pomace into its parts and, in particular, for the extraction of seeds : en fr
  • US2291183A - Display form : en
  • US2291314A - Process of solyency induction : en
  • FR874181A - Enhancements to Multiple Electrode Systems for Transit Time and Speed Controlled Devices : en fr
  • US2291502A - Electric switch : en
  • ES150691A1 - A PORTA-HUNTING DEVICE : en es
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