• USD134013S - Design for a dress : en
  • US2298099A - Modulation : en
  • US2298239A - Light source : en
  • DE726084C - Device for remote transmission of measured quantities according to the compensation method using a photoelectric cell : de en
  • FR875862A - Improvements to electric resistance welding machines : en fr
  • US2298036A - Cock or valve : en
  • US2298261A - Pen : en
  • US2297884A - Gearshift lever handle construction : en
  • US2297758A - Printing telegraph system : en
  • AU416842A - Photographic emulsions : en
  • DE726066C - Process for pickling and bichromating magnesium-bismuth alloys : de en
  • US2298047A - Display stand : en
  • US2298043A - Molding machine : en
  • US2298090A - Optical objective : en
  • DE726116C - Installation device for ship hatch cover : de en
  • US2297805A - Ravel stop for knitted fabrics and method of making the same : en
  • USRE22196E - Catalytic conversion process : en
  • AU410342A - Improvements in and relating to paint andthe manufacture thereof : en
  • CA407896A - Train pipe connector : en fr
  • DE726076C - Process for the production of tanning agents from sulphite cellulose waste liquors : de en
  • US2298187A - Baking powder composition : en
  • AU115939B2 - Improvements in or relating to milling, engraving and like copying machines : en
  • FR51541E - Surge protector especially in the form of a threaded plug and a separate part : en fr
  • FR875993A - Concrete frame : en fr
  • US2298193A - Refrigerator car construction : en
  • DE726021C - Discharge tubes according to patent 690019, whose vacuum vessel consists entirely or largely of metal and whose electrode system, whose axis is arranged parallel to the base plate, is supported by laterally arranged sheet metal supports which are perpendicular to the base plate and attached to it : de en
  • FR875859A - Gas purification generator device for supplying internal combustion engines : en fr
  • US2297734A - Stabilization of nitrated carbohydrates : en
  • US2297825A - Steak holder for broiling apparatus : en
  • FR875890A - Small refrigeration appliance : en fr
  • USD134016S - Design for a camera support : en
  • FR875921A - Nozzle : en fr
  • DE726061C - Fuel injection pump for compressorless diesel engines : de en
  • DE726098C - Platinum alloy : de en
  • GB548324A - Improvements in and relating to electric hand torches : en
  • US2297896A - Wide band electromagnetic horn antenna : en
  • DE726143C - DF antenna system : de en
  • DE726330C - Twin wheel : de en
  • US2297750A - Diamond-holding tool : en
  • US2297908A - Cooling device : en
  • GB548302A - Improvements in mountings for guns, searchlights and similar directional elements : en
  • FR875943A - rational oven for drying vegetables and fruits : en fr
  • DE726133C - Process for the production of aluminum sulfite solutions from clays, kaolins and similar hard-to-digest alumina silicates : de en
  • US2298194A - Birdproofing : en
  • US2297934A - Air cleaner : en
  • US2298019A - Shaving cream : en
  • US2298138A - Inorganic substituted acetic acid : en
  • US2297687A - Alloy and cutting tool : en
  • US2297751A - Sweetening hydrocarbon distillates : en
  • US2298049A - Tool joint : en
  • AU190441A - Improvement in hatmaking apparatus and method of operating same : en
  • DE726048C - Process for the production of black coatings on metal parts of electron tubes : de en
  • FR51503E - : fr
  • FR875917A - Amplifier tube device, such as a radio receiver, comprising an incandescent lamp mounted in series with the filament of one or more of these tubes : en fr
  • US2297890A - Furnace : en
  • US2298158A - Door suspension and actuating means : en
  • US2297965A - Radiator cover : en
  • US2298202A - Listing calculator : en
  • FR875818A - Water heater for apartment fireplace : en fr
  • FR875819A - Paper finishing : en fr
  • US2297759A - Jumping toy : en
  • US2297879A - Rail flaw detector mechanism : en
  • GB548395A - Improvements relating to float-operated valves feeding water to tanks and cisterns : en
  • GB548337A - Improvements in photo-sensitive electrodes : en
  • GB548397A - Improvements in the manufacture of hydrogen : en
  • DE726310C - Electric trigger for safety gears on shaft conveyor systems : de en
  • FR875990A - Pickling solutions for the surface treatment of parts prepared from magnesium alloy : en fr
  • USD133977S - Alfred engine stand : en
  • CA407841A - Fire extinguishing apparatus : en fr
  • GB548429A - Improvements in and relating to means for transporting biscuits or like articles : en
  • FR51521E - Electric boiler for all heaters : en fr
  • DE726244C - Oxygen breathing apparatus : de en
  • DE726324C - Body hit by a high relative speed, in particular an aircraft component : de en
  • CA407790A - Draft gear : en fr
  • US2297747A - Process and apparatus for reducing ores : en
  • US2297867A - Mixing machine : en
  • USD134020S - Design for a textile fabric : en
  • FR875880A - Colorants for vat : en fr
  • DE726262C - Arrangement for automatic parallel switching of AC machines or networks : de en
  • US2297962A - Canning method : en
  • FR875906A - Process for preparing or classifying coal and other mixtures of materials of different densities into a thick, easily decomposable slurry : en fr
  • USD134019S - Design fob a textile fabric : en
  • DE726043C - Arrangement for four-wire connection of trunk lines : de en
  • FR875988A - Fittings device for removable bed allowing quick and easy assembly and disassembly of the uprights (head and foot) to the bed frame : en fr
  • FR51505E - Electrically operated indicator device for remote gauging of liquids in tanks : en fr
  • IE17276L - Herbicides; fertilisers : en
  • US2297736A - Carburetor : en
  • DE726192C - Arrangement for keeping constant the relative phase position of the voltage vectors of two electric circuits of the same frequency or the relative synchronization of the voltage vectors of two electric circuits of different frequencies : de en
  • DE726137C - Bonnet furnace : de en
  • DE726252C - Circuit arrangement for the control of messages given over telephone lines with the help of complementary selection : de en
  • US2297931A - Modulated high frequency transmitter : en
  • US2297860A - Garment protector : en
  • US2297945A - Dispenser : en
  • GB548385A - Improvements in flat knit goods : en
  • US2298062A - Fire protective system : en
  • US2298128A - Card file : en
  • AU115950B2 - Improvements in and relating tothe treatment of arrowroot : en
  • CA407902A - Radio direction finding system : en fr
  • USD134023S - Jewelry pin or similar article : en
  • FR875954A - Device for controlling voltage distribution in windings subjected to impulse voltages : en fr
  • GB548414A - Improvements in and relating to airscrews : en
  • US2298189A - Electric motor : en
  • USPP546P - Rose plant : en
  • FR51506E - Improvements in load distribution devices between the various power plants in a network, or the various generators in a power plant : en fr
  • US2298058A - Light-polarizing device : en
  • USD133970S - Milling machine : en
  • FR875997A - Socket on overhead conductor : en fr
  • GB548292A - Thermo circulating system for steam boilers : en
  • US2297982A - Collapsible multicompartment carton : en
  • USD134003S - Pedestal for typewriting machines : en
  • USD134017S - Design for an impeller : en
  • DE726131C - Process for the production of effect threads from cotton or other vegetable fibers : de en
  • FR51527E - Ultra-shortwave devices : en fr
  • DE726082C - Process for the orthochromatic sensitization of silver halide emulsions : de en
  • DE726095C - Switching arrangement for extinguishing gas or vapor discharge paths with arc-like discharge : de en
  • US2297887A - Molding : en
  • FR875881A - Process for manufacturing a thinner for silicate paints : en fr
  • US2297864A - Dialdehyde compound and process for making same : en
  • US2297901A - Individual wheel suspension : en
  • FR875918A - Foot guards, clogs, soles, etc. metal frame : en fr
  • DE726112C - Automatic electrical release device for loads that can be dropped by aircraft : de en
  • USD133974S - Design fob an advertising display stand : en
  • USD133984S - Design for a reflector device : en
  • DE726241C - Lubricating oil processing and conveying system for internal combustion engines : de en
  • GB548314A - Process of preparing sulphanilamide derivatives : en
  • DE726201C - Incandescent pot for metal parts, especially aluminum foil and. like : de en
  • US2297677A - Removable bulldozer attachment : en
  • US2297690A - Dispensing package : en
  • US2297728A - Ethers of substituted phenyl : en
  • US2298066A - Mineral oil gels : en
  • GB548440A - Improvements in and relating to moulds for casting metals : en
  • US2298076A - Electric dynamometer : en
  • US2297717A - Piano action : en
  • CA407833A - Electron emissive cathode : en fr
  • DE726257C - Arrangement for writing receivers with automatic starting and delayed stopping of the strip : de en
  • DE726024C - Mercury vapor rectifier : de en
  • US2298004A - Container manufacture : en
  • US2297791A - Atomizing device for pulverulent material : en
  • US2298072A - Inclinometer : en
  • US2298146A - Ash tray : en
  • US2298151A - Switching apparatus : en
  • CA407855A - Matted glass wool making apparatus : en fr
  • DE726303C - Arrangement for generating periodically repeating current pulses in the same direction from alternating current : de en
  • US2298070A - Voting machine : en
  • CA407773A - Dual front wheel mounting : en fr
  • GB548428A - Improvements in electrolytic cells : en
  • US2298256A - Hay stacker : en
  • AU308441A - Improved passenger propelled wheel chair : en
  • CA407810A - Photographic emulsion : en fr
  • FR51523E - Plate brake for motor vehicles : en fr
  • FR875863A - Gasifier running on charcoal dust : en fr
  • DE726121C - Channel for accommodating electrical cables in aircraft : de en
  • DK60219C - Air cooling device for multi-cylinder Vehicle engines. : da en
  • US2297824A - Conduit outlet box : en
  • GB548321A - Manipulators for use in forging : en
  • GB548331A - Improvements in duplicating machines : en
  • DK60220C - PROCEDURE FOR MANUFACTURE OF ARTICLES OF POWDER OF METAL OR HAIR ALLOY. : da en
  • US2297787A - Production of transparent rubber articles : en
  • USD134024S - Design fob a jewelry pin or similar article : en
  • US2298181A - Electric therapeutic bandage : en
  • US2297680A - Control of electrical devices from liquid levels : en
  • US2298079A - Coating for metals exposed to corrosion and abrasion : en
  • US2297826A - Tooth brush and powder holder : en
  • USD133991S - Design for a leg for a stretcher : en
  • DE726261C - Feed-through capacitor : de en
  • FR875893A - Slow carbonization furnace with licking gas, continuously operating, in particular for the treatment of oil shales : en fr
  • DE726027C - Idle control device for compressor : de en
  • FR51538E - Dentist separator device disc holder : en fr
  • FR51540E - Combustion engine with pistons arranged in a star shape working in opposition : en fr
  • GB548307A - Improvements in or relating to enclosed electric switchgear : en
  • US2297852A - Turbine cylinder construction : en
  • US2298153A - Vibrating screen : en
  • USD133999S - Design for a shoe : en
  • DE726013C - Carrier frequency transmission system : de en
  • FR875872A - Process for the preparation of sulfuric leuco-esters and products obtained by this process : en fr
  • GB548334A - Improvements relating to ships' ventilators : en
  • US2297998A - Separating mechanism for threshers : en
  • US2298170A - Heat deflector : en
  • CA407853A - Hopper car door mechanism : en fr
  • FR875844A - lubricating oil-in-water emulsion and its manufacturing process : en fr
  • DK60221C - Opening device for cans and similar containers. : da en
  • US2297870A - Skate : en
  • DK60204C - Procedure for Refining Smelting of Metals by the Iron Group. : da en
  • US2297966A - Insertable joint : en
  • US2298196A - Load transporting, slewing, and tiering device : en
  • US2297839A - Dewaxing solvent and solvent recovery : en
  • GB548305A - Improvements in and relating to electrical apparatus, e.g., electric transformers : en
  • US2298235A - Circuit breaker operation recorder : en
  • FR875841A - Lubricator-atomizer : en fr
  • DE726146C - Resistance arrangement for spark extinguishing circuits with capacitor : de en
  • US2298022A - Adjustable end play motor : en
  • US2298145A - Lifting grapple : en
  • US2297735A - Hair clipper : en
  • US2298089A - Christmas tree decoration : en
  • FR875949A - 1-Amino-7-hydroxy-naphthalene-5-sulfonic acid, 1-amino-6-hydroxy-naphthalene-8-sulfonic acid, their nitrogen substitutes and methods of manufacture : en fr
  • GB548400A - Improvements in or relating to pistons for internal combustion engines : en
  • GB548441A - Improvements in and relating to frequency converters : en
  • US2298050A - Guide : en
  • GB548350A - Improvements in or relating to electric welding : en
  • GB548354A - Improvements in and relating to dough dividers : en
  • US2298226A - Floor covering : en
  • CA407799A - Braking ring : en fr
  • CA407874A - Frequency changer : en fr
  • FR875972A - Relays of small dimensions insensitive to vibrations : en fr
  • FR875809A - Advanced lead-acid accumulator with immobilized liquid : en fr
  • GB548347A - Improvements relating to photographic materials : en
  • US2298172A - Electrical connector : en
  • US2297957A - Fastener device : en
  • FR875944A - Improvements to purses or similar articles : en fr
  • US2298218A - Pillow and similarly cushioned article : en
  • GB548308A - Improvements in or relating to looms with weft insertion by nipper members : en
  • US2297977A - Adjustable doorstop and method of applying same : en
  • CA407757A - Edible article production : en fr
  • GB548338A - Improvements in or relating to airscrews : en
  • FR875942A - Birefringent plate with modified temperature coefficient of double refraction, especially for automobile headlights : en fr
  • GB548394A - Improvements in electric transformers : en
  • FR875895A - Installation for changing wagons for large landing stages in mining galleries : en fr
  • GB548431A - Improvements in and relating to electric frequency meters : en
  • US2298150A - Expansion valve : en
  • US2297909A - Method of lubrication and of treating gears : en
  • US2297943A - Air-cushioned valve for compressors : en
  • USD134034S - Design for a pin clip : en
  • US2297809A - Pipe bend machine : en
  • DE726235C - Electromagnet for non-destructive testing of materials : de en
  • DE726270C - Use of beryllium-containing alloys for balance springs : de en
  • GB548367A - Improvements in or connected with the construction of metal boats : en
  • DK60222C - Waterproof closure for bags with slit-like opening, especially intended for shipwrecked for storage of objects that are desired to be protected from water. : da en
  • FR875843A - Improvements made to the electric operation of winches, in particular for lifting trawls : en fr
  • GB548323A - Means for indicating whether a seat in a vehicle, building or the like is occupied or not : en
  • DE726001C - Device to prevent the overloading of a gas pipe : de en
  • FR875813A - Economical process for the agglomeration of waste from all solid fuels : en fr
  • US2298042A - Flashlight : en
  • GB548300A - Improvements in or relating to the production of water-resistant size coatings or films : en
  • US2297897A - Governor for internal combustion engines : en
  • USD134005S - Design fob a dress : en
  • DE726016C - Counter arrangement : de en
  • US2297951A - Deicing device : en
  • US2298160A - Portable mixing plant : en
  • US2297681A - Hydraulic booster system : en
  • US2297859A - Refrigeration apparatus : en
  • CA407852A - Welding material : en fr
  • FR875839A - Detachable power outlet : en fr
  • FR875855A - Commercial use in all its transformable forms of the bone or vertebral column of cod, haddock and all other kinds of fish as food and restorative : en fr
  • USD133992S - Design fob a last or similar article : en
  • CA407832A - Fan blade : en fr
  • CA407838A - Brake control apparatus : en fr
  • FR875845A - Improvements to split tubular rivets : en fr
  • US2297738A - Lamp holder : en
  • FR875815A - Quay wall with gates : en fr
  • GB548392A - Gas-filled electric discharge device : en
  • FR875992A - Radially split thrust bearing : en fr
  • GB548282A - Improvements in or relating to turbines : en
  • GB548411A - Improvements in or relating to photographic materials : en
  • FR875885A - Rear wheel elastic suspension for motorcycles : en fr
  • GB548298A - Shock-absorbing devices for the wheels of motor-cycles : en
  • GB548344A - Improvements in or relating to machines for use in the manufacture of shoes : en
  • DE726302C - Two-layer excitation winding for synchronous machines : de en
  • AU115941B2 - Improvements in and relating to retaining catches for sliding windows : en
  • DE726060C - Device for hanging up glued flycatchers : de en
  • DK60223C - Device for power machines to prevent unwanted maneuvering of these. : da en
  • DE726109C - Hydraulically controlled copy milling machine : de en
  • DE724791C - Process for making pasta : de en
  • US2298243A - Magnetic separator : en
  • DE726164C - Device for locking the doors of two interconnected wardrobes : de en
  • GB548339A - Improvements in feed scrolls for extruding machines and to machines incorporating such scrolls : en
  • FR51548E - Enhancements to transit time generators : en fr
  • US2297715A - Pressure regulating device : en
  • GB548408A - Improvements relating to detachable connections for supporting or suspending electric light fittings or for other purposes : en
  • FR875908A - Process for separating the finest particles from fine-grained materials, e.g. coal, in aisle washers : en fr
  • DE726189C - Screw slot clamp for electrical cables with cable entry slots closed at the top and bottom and an I-shaped floor bar serving as a cable support : de en
  • GB548330A - Improvements in or relating to the bonding of metals : en
  • GB548370A - Improvements in or relating to frequency modulation : en
  • FR51516E - Electric discharge tube and frequency changer arrangement incorporating such a tube : en fr
  • DE726311C - Process for embossing depressions in foils made from cellulose derivatives : de en
  • US2297678A - Pressure gauge : en
  • US2297742A - Blocking tube oscillator for television : en
  • US2297983A - Method of making detachable bits for rock drills : en
  • US2298010A - Marine artificial horizon : en
  • DE726319C - Gas turbine plant, in which part of the working fluid carries out a cycle, while another part is removed from the cycle : de en
  • US2297935A - Ventilated toilet : en
  • FR875826A - Matrix manufacturing process : en fr
  • USD133987S - emblem or : en
  • DE726183C - Automatic regulation of air heating, especially for railway vehicles : de en
  • DE726317C - Two-stroke internal combustion engine with a star arrangement of the working cylinders : de en
  • CA407850A - Television transmitting system : en fr
  • CA407858A - Chemical treating apparatus : en fr
  • CA407900A - Hair clipper : en fr
  • US2298012A - Transmission operating means : en
  • US2298027A - Coal breaking mechanism : en
  • CA407901A - Railway vehicle truck : en fr
  • CA407811A - Cathode ray tube : en fr
  • US2298083A - Control circuits : en
  • US2297971A - Coin selector : en
  • US2297981A - Method of frosting glass articles : en
  • US2297995A - Cabinet : en
  • US2297997A - Drive mechanism for clothes wringers : en
  • US2298195A - Thermostat : en
  • USD134025S - Design for a jewelry pin or similar article : en
  • GB548345A - Improvements in or relating to means for reducing the induced voltage when an inductive circuit is interrupted : en
  • CA407887A - Separable fastener : en fr
  • US2298174A - Elevator control system : en
  • DE726236C - Device for measuring detonation vibrations in the cylinder of internal combustion engines : de en
  • CA407891A - Object detection by electro-magnetic rays : en fr
  • GB548398A - Improvements in the manufacture of hydrogen : en
  • GB548438A - Improvements in and relating to operating mechanism for circuit breakers : en
  • USD134007S - Design for a dress : en
  • CA407807A - Roofing element : en fr
  • US2297723A - Treatment of styrene type compounds : en
  • US2298255A - Liquid explosive : en
  • DE726086C - Device for monitoring the position of the coke pushing machine, coke cake guide car and coke extinguishing car in horizontal chamber furnace batteries : de en
  • CA407879A - Telegraph transmitter : en fr
  • US2297996A - Venetian blind : en
  • US2298188A - Motor control system : en
  • US2297683A - Traffic actuated control apparatus : en
  • CA407865A - Glow lamp : en fr
  • DE726307C - Process for producing a spinnable fiber : de en
  • DE1523724U - FACE PLATE FOR RAILWAY CAR DOORS MADE OF SHEET IRON : de en
  • DE726059C - Fertilizer spreading device with an open conveyor belt that can be wound around a rear roller : de en
  • FR875817A - Improvements to stenotyping machines : en fr
  • DE726301C - Changeover switch for electrical circuits with a switching arm that is latched by contact rollers : de en
  • DE726306C - Automatic traveling grate with subsequent fuel storage : de en
  • US2297709A - Hot-melt coating composition comprising cellulose ethers : en
  • US2297900A - Pneumatic motor : en
  • US2297685A - Method of preparing vegetable proteins : en
  • DE726284C - Device for adjusting propellers during operation : de en
  • US2297786A - Method of partial freezing out of liquid : en
  • US2297796A - Chip control mechanism : en
  • US2297761A - Refrigeration : en
  • US2298129A - Treatment of wells : en
  • US2298185A - Trolley frog control system : en
  • USRE22194E - Certificate op correction : en
  • CA407903A - Production of optical isomers of acyl-b-alkyl choline salts and intermediates : en fr
  • US2298245A - Garter waist : en
  • GB548317A - Improvements in length measuring instruments : en
  • US2297807A - Fingernail bonnet : en
  • DE726129C - Device for illuminating and sterilizing beer transport barrels : de en
  • CA407894A - Egg carton : en fr
  • FR51508E - Improvements to "thermovelocimetric" devices usable as fire alarms : en fr
  • AU115927B2 - Improved starting appliance for producer gas apparatus : en
  • CA407840A - Dynamic braking control system : en fr
  • FR51518E - Internal pressure cabin for high altitude aircraft : en fr
  • DE726063C - Internal combustion turbine with an internal combustion piston engine rotating independently of the turbine shaft : de en
  • DE726194C - Adjustable high voltage transformer : de en
  • DE726293C - Device for alternately laying out the printed products coming from a printing machine in counted groups : de en
  • CA407905A - Solvent for condensation products : en fr
  • CA407772A - Milling machine centre pin : en fr
  • DE726087C - Device for the automatic control of the supply or the withdrawal of liquid from containers, in particular for the control of feed devices of steam boilers : de en
  • CA407813A - Starting control for synchronous motors : en fr
  • US2298084A - Noise limiting circuit : en
  • DE726096C - Device for vulcanizing endless V-belts made of rubber or the like. : de en
  • AU234841A - Improvements in the treatment of oil shales and the like : en
  • US2297712A - Integrated model airplane : en
  • FR875846A - Elastic wheel : en fr
  • FR875892A - Turbine improvements : en fr
  • DE726023C - Metal converter vessel with a cooling pipe system that extends through the vessel from the bottom to the lid : de en
  • DE726154C - Process for the preparation of disazo dyes : de en
  • GB548381A - Improvements in and relating to the refining and casting of magnesium and alloys rich in magnesium : en
  • DE725278C - Process for the preparation of partially hydrogenated cyclic compounds having 3 or more carbon rings by ring closure reaction : de en
  • GB548377A - Conveying device : en
  • GB548333A - Self-binder for loose leaves, letters, parts, periodical literature and the like : en
  • CA407867A - Container for tooth brushes : en fr
  • DE726078C - Method for signaling foreign reflective bodies entering the propagation field of electrical waves : de en
  • GB548365A - Hard facing of metals : en
  • US2298104A - Fabricated steel studding : en
  • US2297878A - Method of making hardened composite articles : en
  • DE726292C - Device for guiding a paper web in paper-processing machines, especially in the folding units of rotary printing machines : de en
  • DE726132C - Control method and device for gas delivery systems : de en
  • GB548303A - Collapsible threading device : en
  • GB548389A - Improvements in the treatment of starch and the like : en
  • AU350041A - Die casting machine : en
  • US2297923A - Method of positioning magnetically responsive sleeves within a mass of moldable material : en
  • US2297919A - Holder for cigarettes or like articles : en
  • US2298219A - Ignition system fob internal com : en
  • US2298106A - Hydraulic driven air pump : en
  • GB548401A - Improvements in or relating to pick-holders for reversible mining machine cutter chains : en
  • US2297705A - Method of adjustment for temperature controllers : en
  • US2297792A - Thermometer : en
  • FR875889A - Process for obtaining, by anodic treatment, protective layers on machined parts of light metals : en fr
  • GB548387A - Improvements in or relating to the production of artificial textile materials, films and other shaped articles having a basis of a polymerised vinyl ester : en
  • GB548393A - Improvements in lathes and other machine tools : en
  • DE726280C - Control device for the additional air valve of high altitude breathing apparatus with lung-controlled oxygen supply : de en
  • DK60225C - Razor. : da en
  • US2297833A - Detachable instrument socket : en
  • US2298115A - Cable clamp and tightener : en
  • US2297695A - Hydrocarbon reforming : en
  • US2297920A - Shaped brick : en
  • US2298026A - Control system : en
  • USRE22193E - Liquid dispensing apparatus : en
  • USRE22195E - Coupling system : en
  • US2297799A - Viewing device : en
  • FR875850A - Double seat valve for steam engines and other applications : en fr
  • FR875860A - Method and devices for taking 3D cinematographic pictures : en fr
  • DE726279C - Fire extinguisher with liquid extinguishing agent expelled by compressed gas : de en
  • FR51543E - Silicon Carbide Tubular Heating Resistor : en fr
  • US2298006A - Molding apparatus : en
  • GB548425A - Improvements in or relating to magazines for firearms : en
  • FR51520E - Tin can : en fr
  • DE726287C - Process for depositing oil or lacquer colors, varnishes or the like when spray painting objects : de en
  • US2297975A - Hydraulic device : en
  • DE726323C - Aircraft wing : de en
  • FR875977A - High pressure arc valve, with ignition screens arranged in pairs : en fr
  • FR875838A - Glue for all applications, its manufacturing process and products coated with this glue : en fr
  • US2298149A - Continuous heating furnace : en
  • DE726209C - Rotating ring dome mount on aircraft fuselages : de en
  • DE726171C - Hot air drying machine for fabrics : de en
  • DE726264C - Flat sinker knitting machine with device for the forced return movement of the sinkers : de en
  • FR875847A - Method and installation for the production of combustible gas, in particular for supplying engines and new product thus used : en fr
  • DE726108C - Turning device for engines : de en
  • DE726114C - Retractable vehicle roof : de en
  • US2298053A - Automatic circuit breaker : en
  • AU346441A - Improvements in and connected with tractor attached implements : en
  • CA407819A - Circuit interrupter : en fr
  • FR875812A - Regulator : en fr
  • FR875958A - Cooling device for internal combustion engines, in particular for aircraft engines : en fr
  • CA407837A - Compressor apparatus : en fr
  • US2297776A - Air-heating fireplace : en
  • US2297932A - Printing plate preparation : en
  • DE725291C - Process for the preparation of symmetrical and asymmetrical polymethine dyes : de en
  • DE726040C - Fire lighter from several burners with different burn times : de en
  • CA407777A - Lubricator : en fr
  • CA407793A - Molten iron desulphurization : en fr
  • CA407829A - Brake control means : en fr
  • US2298098A - Garment : en
  • GB548382A - Improvements in or relating to toilet creams having cleansing properties : en
  • FR875835A - Centrifugation skimming device : en fr
  • FR875875A - Firing device for artillery pieces : en fr
  • US2297989A - Ring binder construction : en
  • USD134015S - Design for a dress : en
  • FR875825A - Lined corrugated board making apparatus : en fr
  • FR875991A - Surface protection of magnesium alloys : en fr
  • US2297684A - Scriber : en
  • US2297726A - Method and apparatus for drying or the like : en
  • DE725960C - Device for measuring the air resistance of respiratory protection filters : de en
  • GB548362A - Improvements relating to electric warning lights : en
  • FR875901A - Interlocking device for electrically operated motor vehicle systems, in particular for horn and signalers : en fr
  • FR875957A - Improvements to the assembly of machines on their base : en fr
  • GB548383A - Improvements in or relating to booster pumps and fuel systems for aircraft employing the improved booster pumps : en
  • DE726103C - Device for removing stumps : de en
  • DE726294C - Evaporator for refrigeration machines : de en
  • US2298037A - Shoe manufacturing method and apparatus : en
  • USD134011S - Design foe a scarf or similar article : en
  • FR875945A - Improvements to tent frames and the like : en fr
  • FR875956A - Oil for refrigeration machines : en fr
  • GB548374A - Improvements relating to pre-fabricated portable huts, sheds, houses and the like : en
  • US2297967A - Baffled resealing trap for plumbing fixtures : en
  • GB548378A - Apparatus for use in obtaining aerial photographs : en
  • FR51534E - Automatic voltage adjustment device with simultaneous current adjustment by means of a common regulator : en fr
  • US2298198A - Husking and cleaning mechanism : en
  • DE726210C - Arrangement of the steering clutches for caterpillar vehicles, consisting of multi-disc clutches : de en
  • FR875848A - Improvements to the walls of a room in order to create an artificial climate : en fr
  • CA407788A - Railway four wheel truck : en fr
  • US2297939A - Method of detecting the penetration of an oil-bearing horizon : en
  • CA407789A - Friction absorbing device : en fr
  • CA407836A - Brake control means : en fr
  • AU115907B2 - Improvements in the treatment of oil shales and the like : en
  • CA407792A - Hydraulically operated valve : en fr
  • US2297780A - Hermetically sealed resistor : en
  • US2298222A - Automatic feed for rotary well drills : en
  • CA407876A - Catalyst for hydrogen production : en fr
  • US2298252A - Vibrator : en
  • DE726273C - Pinning device with two pressing jaws that roll over one another : de en
  • FR875911A - Airtight sealing device for canning glasses, with rubber seal : en fr
  • AU303141A - Improvements in automatic gain control for electrical transmission systems : en
  • DE726251C - Filling holder with a suction piston on a tubular, threaded piston rod : de en
  • CA407800A - Electric cable : en fr
  • CA407862A - Mechanical brush : en fr
  • GB548275A - Improvements in and relating to the case hardening of iron and steel : en
  • DE726237C - Wear testing machine : de en
  • US2297851A - Illuminated display device : en
  • US2297756A - Dredging apparatus : en
  • CA407815A - Gas discharge lamp : en fr
  • GB548315A - Improvements in or relating to orthopedic and other footwear : en
  • FR875821A - Fuel for diesel engines : en fr
  • FR875868A - Bicycle : en fr
  • FR875920A - Automatic device for changing the braking speed (drained load), especially for westinghouse brakes with additional brake cylinder for braking a loaded vehicle : en fr
  • AU188941A - An improved holder to facilitate the operation of removing wrinkles from sheep : en
  • AU115951B2 - Improved passenger propelled wheel chair : en
  • US2298183A - Machine for substituting cores for the cores in yarn packages : en
  • CA407779A - Water softening apparatus : en fr
  • DE726155C - Support bracket for curtains, drapes or the like. : de en
  • DE726163C - Espagnolette lock : de en
  • FR875936A - Periodically breaking contact device : en fr
  • DE726181C - A streamlined vehicle, especially a railcar : de en
  • DE726200C - Feed water heater : de en
  • DE726229C - Electrically internally heated hair curling rod for the permanent wave method : de en
  • FR875898A - Cutting unit for dry razor : en fr
  • GB548304A - Improvements in or relating to shell fuzes : en
  • FR51550E - Outlet connection on pipe : en fr
  • US2297926A - Frequency modulated transmitter : en
  • GB548446A - Improvements in or relating to devices for testing gears, particularly helical gears : en
  • CA407802A - Electric conductor : en fr
  • FR875873A - Metal feed device for machines for melting individual printing types : en fr
  • FR875923A - Method and apparatus for rapid drying of timber : en fr
  • FR875933A - Radio-electric receiving apparatus comprising a folding adjustment dial arranged outside the cabinet : en fr
  • FR875960A - Valve needle guide for sprinklers : en fr
  • GB548366A - Improvements in or relating to header or upsetting machine : en
  • GB548369A - Improvements in or connected with force transmission mechanism for dynamometers : en
  • DE723514C - High-frequency device with tactile detent position for predetermined tuning positions : de en
  • DE726004C - Process for extracting smoldering : de en
  • FR875829A - Improvements to armature windings of commutator machines : en fr
  • AU115971B2 - Photographic emulsions : en
  • DE726000C - Self-tightening clamping device : de en
  • DE726036C - Lubricating device for the compressor driven by the internal combustion engine of motor vehicles : de en
  • DE726179C - Device for heating rivets : de en
  • DE726125C - Housing for multi-cylinder internal combustion engines : de en
  • US2298093A - Production of photographs in blueblack tones : en
  • US2297782A - Crushing machine : en
  • US2298126A - Signaling system for transformers : en
  • US2298262A - Toy : en
  • DE726260C - Receiver with a device for eliminating clicks : de en
  • USD134000S - Design for a coat : en
  • GB548448A - Improvements in furnaces for melting granular materials : en
  • FR875980A - Grease seal for the introduction of compressed air in rotary chucks or similar parts of machine tools : en fr
  • DE725986C - Protective cover for basic clamps of permanent wave devices : de en
  • US2297710A - Slicing machine : en
  • GB548335A - Improvements in and relating to brushes : en
  • GB548413A - Improvements in or relating electric heating appliances : en
  • DE726038C - Electromagnetic device to keep the flaps closed and to close again : de en
  • DE726272C - Method and device for setting separating plates in test tubes for gas analysis purposes made of thermoplastic material : de en
  • FR875866A - Heating devices for carbonization furnaces with recovery of by-products : en fr
  • GB548311A - Improvements in or relating to electrically driven machines having electrically heated elements : en
  • US2297743A - Paper feeding device : en
  • FR875842A - Improvements to multi-span suspension bridges : en fr
  • DE726128C - Liquid fuel evaporator : de en
  • FR51535E - Process and apparatus for the manufacture of urea from carbon dioxide and ammonia : en fr
  • FR875919A - Improvements in the manufacture of warning stamps for bicycles : en fr
  • DE726003C - Method and device for the smoldering of baking and blazing coal : de en
  • DE726315C - Band body, especially for jewelry and watch bracelets : de en
  • USD133997S - Design for a bank : en
  • DE726265C - Flat weft knitting machine : de en
  • FR875994A - Manufacturing process of clad tubes, in particular copper clad steel tubes : en fr
  • US2298111A - Elevator control system : en
  • DE726213C - Process for dyeing yarns or fabrics made of cellulose fibers with Kuepen dyes or sulfur dyes and leveling uneven colors with Kuepen dyes : de en
  • DE726072C - Band to hold half masks on the hood for aviators : de en
  • US2298236A - Terminal bank : en
  • CA407843A - Guy rod grounding clamp : en fr
  • AU115935B2 - Improved circuit arrangements for compensating for varying temperature coefficient of frequency in electrical circuits : en
  • AU299541A - Improvements relating to railway traffic controlling apparatus : en
  • DE726090C - Reception system, consisting of several antennas and receivers : de en
  • DE726005C - Liquid seal for the lids of smoldering retorts : de en
  • GB548434A - Improvements relating to vehicle wheels : en
  • GB548329A - Improvements in or relating to colouring compositions : en
  • US2297804A - Material reducing mill : en
  • US2297990A - Testing greaseproof paper : en
  • DE709889C - Self-acting depth spreading device for backward moving machine weapons : de en
  • US2297795A - Communication system : en
  • DE726170C - Operation of electrostatic separators with two superposed electrodes of opposite polarity : de en
  • US2298177A - Electric filter circuit : en
  • CA407767A - Knuckle joint : en fr
  • AU115917B2 - Die casting machine : en
  • DE726225C - Photoelectric relay with gas or steam filling : de en
  • AU115919B2 - Improvements in and relating to paint andthe manufacture thereof : en
  • US2297925A - Antenna system : en
  • AU307341A - Improvements in or relating to shoe trimming machines : en
  • US2297961A - Cash register : en
  • US2297836A - Automatic temperature regulation : en
  • CA407826A - Electric switch : en fr
  • US2298210A - Seam welding timer : en
  • US2298025A - Artificial limb : en
  • US2298040A - Fluid foil : en
  • US2298221A - Cutting machine for cotton strips and the like : en
  • DE725990C - Process for the electrolytic production of high-gloss, hydrogen-free nickel coatings : de en
  • US2298246A - Machine for attaching articles : en
  • CA407839A - Motor-driven agitator mechanism for liquids : en fr
  • US2297708A - Method of making pile fabrics : en
  • US2297794A - Communication system : en
  • US2298085A - Piezoelectric oscillator : en
  • US2297855A - Bolstered handled cutlery : en
  • US2297972A - Sound reproducing device : en
  • FR51515E - Electromagnetically controlled direction indicator, in particular for motor vehicles : en fr
  • FR875851A - Crankshaft for polycylindrical two-stroke inline single or multiple engines : en fr
  • DE726165C - Flagpole holder to be attached to walls : de en
  • DE726070C - Process for the metallic filling of breakthroughs in workpieces made of ceramic or similar material : de en
  • DK60206C - Electric Battery Battery with Metallic Cell Containers. : da en
  • DE726145C - Arrangement for double contact springs of electric toggle switches : de en
  • FR875974A - Observation apparatus for positives and negatives of photographs or x-rays : en fr
  • FR875940A - Process for tanning chrome leather : en fr
  • DE726053C - Process for the production of oil-saving binders : de en
  • GB548349A - Improvements in and relating to the synthesis of heterocyclic compounds : en
  • US2297749A - Truck : en
  • US2298028A - Hot air circulating attachment for heaters : en
  • US2297968A - Timing device for conveyers : en
  • FR875989A - Wind compensator for firing stations mounted on airplanes, in particular for stations with limited aiming travel : en fr
  • GB548415A - Improvements in and relating to lapping machines, more especially for surfaces in high precision instruments : en
  • DE726239C - Flat firewood container made of an inelastic material with sloping side walls : de en
  • DE726281C - Device for attaching oxygen bottles in breathing apparatus : de en
  • US2298127A - Process of preparing artificial fibers : en
  • US2298161A - Cultivator : en
  • FR875831A - Improvements to silo unloading devices, etc. : en fr
  • US2298118A - Electric insulator : en
  • FR875865A - Radiant tube heaters : en fr
  • FR875987A - Surgical sewing thread sterilization process : en fr
  • FR875858A - New cleaning process for textile products, fibrous materials, clothing, spongy materials, metal pieces or shavings : en fr
  • FR875934A - Automatic lighter : en fr
  • DE726166C - Diffuser : de en
  • FR875853A - Device for automatically carrying out the engraving or the line allowing the subsequent engraving of all surfaces: cylindrical, flat or other from any document: line, halftones, or polychrome : en fr
  • DE726135C - Plant for the quenching of pipes and hollow bodies : de en
  • FR875915A - Mechanically operated cutting device for stacked veneer and linoleum sheets : en fr
  • GB548218A - Improvements in or relating to aerial tuning systems : en
  • DE726031C - Oil spray emulsifiable with water, fungicidal and insecticidal : de en
  • GB548449A - A new or improved label holder for use on steel shelving and the like : en
  • DE726300C - Cam clamp : de en
  • DE726286C - Process for the production of wear-resistant pipes : de en
  • GB548430A - An improved utensil for use in fruit or vegetable drying : en
  • USD133973S - Design fob an electric drill unit or the like : en
  • US2297798A - Industrial heat treating furnace : en
  • US2298141A - Terminal device : en
  • US2298166A - Power tailgate : en
  • US2298214A - Coolant-fuel mechanism and method : en
  • FR875879A - Can filling machine : en fr
  • GB548346A - Improvements in high frequency electron discharge apparatus : en
  • US2298148A - Direction signal : en
  • DK60209C - Electrical Signaling System for Indicating Incoming Diversion or Transition in Electrical Installations. : da en
  • FR51539E - Long rod insulator : en fr
  • US2298003A - Apparatus for converting direct current into alternating current : en
  • GB548379A - Improvements in or relating to abrasive coated paper and process of producing the same : en
  • GB548342A - Improvements in photographic film : en
  • US2297985A - Floating roof : en
  • DE726080C - Device for stripping dirt or the like from the stamp of pressure medium lifting platforms : de en
  • FR875905A - Cathode ray tube : en fr
  • DE726049C - Converter with mercury vapor filling : de en
  • DE726253C - Process for improving the baking quality of flours : de en
  • DE726127C - Knife star dough dividing and rounding machine with hanging device for the dough ring : de en
  • US2298032A - Titanium solution production : en
  • FR51528E - Device for measuring a liquid delivered at variable temperatures with automatic correction of volume variations due to temperature differences : en fr
  • GB548402A - Improvements relating to means for receiving electrically transmitted measurements : en
  • GB548433A - Improvements in lathes and like machine tools : en
  • FR875833A - Wood gasifier : en fr
  • DE726118C - Gas nozzle for gas pressure charger : de en
  • DE726242C - Internal combustion engine for aircraft using the energy and waste heat of the exhaust gases : de en
  • GB548309A - An improved method and apparatus for regulating an installation comprising at least two steam generators : en
  • US2297739A - Stereotype casting box : en
  • US2298101A - Method of making rubber nasal masks : en
  • US2297911A - Substituted phenyl malonic acid and derivative thereof : en
  • US2297987A - Carton : en
  • USD134002S - Design for a dress : en
  • DE726215C - Device for the semi-automatic checking of group and line dialers with step-by-step operation in self-connecting telephone systems : de en
  • FR51524E - Method and device for reproducing a television picture using a cathode ray tube and a separate light source : en fr
  • FR875882A - Machine operating with pressurized liquid : en fr
  • US2297834A - Spring motor : en
  • US2297888A - Price tag indicator : en
  • FR875803A - Installation of prime movers : en fr
  • FR51514E - Continuously operating press for the production of agglomerates from vegetable waste and the like : en fr
  • US2298024A - Envelope opener : en
  • DE726107C - Torsional vibration damper : de en
  • DK60210C - Apparatus for Closing and Disconnecting AC Power Circuits. : da en
  • FR875857A - New degreasing machine using volatile solvents : en fr
  • DE726211C - Arrangement for the operation of glow plugs, in particular for the ignition of gas or liquid burners : de en
  • CA407786A - Railway car underframe : en fr
  • CA407893A - Pump priming means : en fr
  • USD133996S - Lightphoof message dispatch box : en
  • US2298063A - Clear vision device : en
  • AU205141A - Improved starting appliance for producer gas apparatus : en
  • FR51533E - Preparation of oily substances of all viscosities, based on castor oil and coal tar derivatives, usable in particular as lubricants : en fr
  • US2298250A - Method of making finned tubes : en
  • USD134018S - Design for a textile fabric : en
  • US2298133A - Synchronous motor starting scheme : en
  • USD134001S - Design for a wallet : en
  • FR875975A - Combustible chipboard based on sawdust and process for obtaining it : en fr
  • GB548384A - Improvements in or relating to optical objectives : en
  • US2297974A - Darkroom safelight lamp : en
  • US2298199A - Portable hoist : en
  • US2297940A - Electric discharge lamp : en
  • US2297891A - Fire alarm : en
  • GB548301A - Signal collecting systems for radio receivers and the like : en
  • DE726099C - Device for the formation of a linear display of the measured value in weighing devices, in particular inclination scales, and other similar measuring devices : de en
  • US2298211A - Condenser bushing : en
  • DE726322C - Kite or kite balloon : de en
  • FR875891A - Mounting of maneuvering devices on vehicles, in particular on motor vehicles : en fr
  • FR875899A - Two-stroke internal combustion engine : en fr
  • GB548278A - Improvements in loud speakers : en
  • US2297873A - Rate of climb indicator : en
  • CA407776A - Slide fastener for shirts : en fr
  • DE726033C - Regulator for externally ignited internal combustion engines : de en
  • GB548420A - Improvements in or relating to electric motor control systems : en
  • GB548442A - Improvements in and relating to machines for spinning metals : en
  • US2298046A - Apparatus and method for use in fever therapy : en
  • US2297703A - Process of treating animal fibers : en
  • US2298094A - Multicolor printing machine : en
  • US2298258A - Portable cementing apparatus : en
  • US2298253A - Valve : en
  • DE726105C - Procedure for converting an air-compressing self-ignition engine to operation with liquid gas such as butane, propane or vice versa : de en
  • FR51509E - Trailer for motor cars with one or two automatically steerable wheels : en fr
  • DE726191C - Arrangement for generating an alternating voltage from a direct voltage by means of a periodically variable capacitance and an impedance matched to resonance with the capacitance for the frequency of the alternating voltage to be generated : de en
  • FR875870A - Hydrocarbon cracking process : en fr
  • US2298005A - Grinder aligner : en
  • CA407774A - Printing mechanism : en fr
  • FR875947A - Process for preparing aluminum compounds from coal products containing this element : en fr
  • US2298069A - Tree support : en
  • US2297820A - Foldable top structure for motor vehicles : en
  • US2297714A - Combing and massage device : en
  • DE726243C - Hydraulic drive device : de en
  • FR875996A - Improvements made to assemblies intended to transform a sawtooth voltage into a sawtooth current : en fr
  • CA407798A - Railway car truck support : en fr
  • CA407873A - Electron dischage tube with fluorescent screen : en fr
  • CA407895A - Cellulosic material, etc. : en fr
  • US2297874A - Protective helmet : en
  • US2298180A - Control system : en
  • US2297861A - Adjustably supported splint : en
  • US2297930A - Vibratory armature electromagnetic motor : en
  • US2298082A - Back rest carriage for lathes : en
  • US2298260A - Method of preparing cellulose derivatives and product obtained thereby : en
  • US2298130A - Frequency converter : en
  • US2298086A - Toracco weighing scale : en
  • DE726328C - Propeller hub cap : de en
  • CA407849A - Oil well treatment : en fr
  • US2297913A - Flexible control : en
  • CA407868A - Container closure device : en fr
  • US2297721A - Electrical gaseous discharge control device : en
  • US2297706A - Temperature controller : en
  • USD134029S - Design for a pin cup : en
  • DE726138C - Tower furnace with support arms arranged one above the other for downward conveyance of the goods : de en
  • AU115909B2 - to Improvements in or relating tothe cleaning of producer gas andthe like : en
  • DE726102C - Weather protection for outdoor beds : de en
  • CA407812A - Starting control for synchronous motors : en fr
  • DE726182C - Automatic regulation of air heating, especially for railway vehicles : de en
  • US2298056A - Razor attachment : en
  • CA407875A - Ignitron starter circuit : en fr
  • US2298186A - Ester : en
  • FR51511E - Improvements to signal repeater devices on board railway convoys : en fr
  • US2298000A - Compass : en
  • CA407821A - Gaseous electric relay device : en fr
  • CA407871A - Electrical discharge device : en fr
  • US2298121A - Harvesting machine : en
  • DE726153C - Process for the preparation of o-oxyazo dyes : de en
  • DE697146C - Rotary field motor with outer cage : de en
  • DE726220C - Arrangement for triggering a one-off time deflection in electron beam oscilloscopes : de en
  • DE726074C - Small card for the production of pile ribbons : de en
  • FR875909A - Shredder with loading device : en fr
  • US2297863A - Railway truck : en
  • US2298020A - Seismic surveying : en
  • USPP547P - Carnation : en
  • FR875834A - Method and apparatus for bleaching textile materials for use in the manufacture of paper and the like : en fr
  • GB548316A - Improvements in means for preventing ice formation on wings and other parts of aeroplanes : en
  • GB548341A - Improvements relating to pre-fabricated portable huts, sheds, houses and the like : en
  • DE726258C - Key-controlled device for the production of punched tape for telegraphic punched tape transmitters : de en
  • GB548356A - Manufacture of polymeric materials : en
  • GB548293A - Improvements in cellulose derivative compositions and articles made therefrom : en
  • US2297785A - Terminal for electrical conductors : en
  • US2297924A - Mercury switch : en
  • US2298016A - Rotary scrubber and method of scrubbing ore : en
  • US2298171A - Slide fastener construction : en
  • CA407830A - Circuit interrupter : en fr
  • US2298131A - Capacitor motor : en
  • US2297832A - Extraction and treatment of volatile liquid hydrocarbons : en
  • DE723561C - Device for the protection of liquid-insulated electrical apparatus : de en
  • AU115926B2 - An improved holder to facilitate the operation of removing wrinkles from sheep : en
  • CA407784A - Tanning agent : en fr
  • AU157341A - Improvements in or relating to filters for the filtration of fluids : en
  • DE726071C - Footwear sewing machine, in particular a double machine, with a drive device for the presser foot : de en
  • DE726245C - Torsion bar suspension for the rollers of caterpillars : de en
  • CA407869A - Television apparatus : en fr
  • US2297752A - Monitoring and control system : en
  • US2297958A - Loose-leaf construction : en
  • CA407860A - Milling machine : en fr
  • CA407791A - Windmill : en fr
  • CA407834A - Induction motor starting and reversing device : en fr
  • US2297835A - Method and means for emptying vacuum cleaner dust receptacles : en
  • US2297937A - Smoker's pipe : en
  • US2297928A - Air conditioning unit : en
  • US2298251A - Wallboard mounting : en
  • USD134006S - Design for a dress : en
  • US2298067A - Apparatus for burnishing shoulders of collapsible tubes : en
  • US2298233A - Valve mechanism : en
  • US2297737A - Sheet-glass forming apparatus : en
  • DE726256C - Device for sending Morse code prepared on a character carrier in freely adjustable intervals : de en
  • US2297676A - Ignition controlling device foe : en
  • US2298217A - Support for curtain cranes : en
  • US2297719A - Control circuit : en
  • GR9988B - COMPLETE SALT COMPOSITION. : el en
  • BE445106A - : en fr
  • US2297970A - Forced air circulation refrigeration system : en
  • DE726014C - Process for the production of molded bodies from refractory, powder-form insulating compounds for electrical lines or cables with metal sheaths : de en
  • US2297755A - Portable electric drain-pipe cleaner : en
  • US2297806A - Magnetic holder for pencils or the like : en
  • US2298206A - Can opener : en
  • USD134031S - Design for a pin clip : en
  • US2297905A - Apparatus for and method of regis : en
  • USD133978S - Pouring spout for containers : en
  • US2297693A - Autoloading firearm : en
  • DK60205C - Volume control device for electron tube amplifiers. : da en
  • US2297856A - Gas burner : en
  • US2297912A - Hoisting apparatus : en
  • US2297696A - Furnace : en
  • US2297866A - Treatment of hydrocarbon oil : en
  • US2298184A - Building and floor foundation : en
  • DE726046C - Procedure for the recovery of a previously suppressed sideband : de en
  • US2297955A - Combination belt : en
  • US2297748A - Side frame : en
  • US2297944A - Compressor air valve : en
  • US2298173A - Container producing machine : en
  • USD133979S - Design fob a building block : en
  • DE726180C - Suspension with load suspension hook for overhead cable cars with pull rope operation : de en
  • DE726309C - Hair curler : de en
  • DE726045C - Arrangement for the transmission of messages : de en
  • DE726148C - Method for transforming electrical voltages : de en
  • DE726223C - Spring-loaded drive with automatic locking of the line roller : de en
  • FR875939A - Process for compensating for the influence of temperature on the efficiency of photographic processing baths : en fr
  • GB548447A - Improvements in and relating to electrical indicating instruments : en
  • CA407760A - Shoe tree : en fr
  • US2297936A - Variable speed drive : en
  • US2297877A - Swing bracket : en
  • US2298167A - Elevator safety device : en
  • FR875961A - X-ray machine : en fr
  • DE726316C - Potato harvesting device attached to a tractor : de en
  • US2297881A - Method of and means for removing drawstrings from lace webs : en
  • DK60218C - Co-string and Procedure for its Manufacture. : da en
  • US2297899A - Structural form for concrete and locking means therefor : en
  • US2297812A - Draft control system : en
  • US2297757A - Draft regulator or control : en
  • US2298075A - Radio frequency oscillator : en
  • DE726100C - Automatic frequency counter : de en
  • DE726079C - Arrangement for the stepless construction and reduction of the voltage of a Leonard generator : de en
  • US2297872A - Control apparatus : en
  • DE726018C - Busbar arrangement in electrical distribution systems : de en
  • CA407859A - Transfer flask : en fr
  • CA407847A - Oil well treatment : en fr
  • USD133972S - Design fob a suitcase ob the like : en
  • USD134014S - Design fob a dress : en
  • CA407785A - Railway car truck : en fr
  • US2298197A - Windshield wiper mechanism : en
  • US2297854A - Combined thermoelectric safety shut-off and electroresponsive valve : en
  • USD134026S - Design for a brooch or similar article : en
  • US2298232A - Method and apparatus for applying stimulant to plants : en
  • US2297775A - Hydrocarbon conversion : en
  • US2298120A - Speed matching regulator : en
  • US2297978A - Means for forming curbs : en
  • USD134004S - Design fob a dress : en
  • US2297679A - Pressure gauge : en
  • FR875820A - Fastener for upholstery fabrics : en fr
  • FR875938A - Method for welding a cable in a coal : en fr
  • US2298155A - Electric drive for sewing machines : en
  • US2297689A - Separation of feldspar from quartz : en
  • CA407796A - Surface ornamenting machine : en fr
  • US2297697A - Lasting machine : en
  • US2297883A - Adjustable ladder platform : en
  • US2298055A - Melting copper : en
  • CA407756A - Stocking : en fr
  • CA407766A - Thrust ball bearing : en fr
  • CA407884A - Electron discharge device : en fr
  • DE726093C - Glow detector : de en
  • FR875884A - Automatic device for feeding duplicating machines intended to carry out accounting reports : en fr
  • GB548326A - Improvements in starting systems for electric motors : en
  • DE726069C - Solder for soft soldering of aluminum : de en
  • DE726285C - Cartridge feed for machine guns with reversible mounts : de en
  • FR875806A - Improvement in electrical contacts : en fr
  • FR875822A - Cracking of hydrocarbon oils : en fr
  • AU115905B2 - Decorticating machine : en
  • DE726204C - Moldings with precious metal coatings : de en
  • DE726314C - Device for the repeated playback of any point in a record recording on speaking machines : de en
  • FR51510E - Process of integral food use by wine of the vitamin qualities of its yeast : en fr
  • USD133990S - Design foe a stretcher : en
  • AU150841A - Improvements in cathode ray tubes : en
  • US2298123A - Magazine for fastener applying instruments : en
  • US2298215A - Periodic motion mechanism : en
  • AU306041A - Improvements in and relating to retaining catches for sliding windows : en
  • CA407907A - Textile sizing manufacture : en fr
  • US2297830A - Condensation drain for explosionproof fittings : en
  • US2297889A - Stepwise tuning of electrical circuits : en
  • US2298201A - Listing calculator : en
  • FR875999A - Device for foot adjustment of a gas burner : en fr
  • AU115942B2 - Improvements inconstant frequency variable dot picture telegraph systems : en
  • FR875964A - Manufacturing process of austenic steel alloys, and their applications : en fr
  • GB548322A - Improvements in or relating to cutting tools : en
  • DE726030C - Valve control for dry gas meters with four or more measuring chambers : de en
  • DE726035C - Single lever control for aircraft engine control devices : de en
  • US2297986A - Method of scouring wool : en
  • FR51537E - Improvements to neutralized amplifiers, especially for ultra-short waves : en fr
  • DE726278C - Photographic plate or film for studying substances using slow neutrons : de en
  • FR875816A - Ring spinning and twisting machine, comprising a pin bed or ring carrier moving during operation : en fr
  • US2297840A - Tank construction : en
  • US2297848A - Circuit interrupter : en
  • USD133995S - Design for a photographic timer : en
  • US2298091A - Solution of vanadium from vanadium oxide mixtures : en
  • GB548436A - Improvements in and relating to fasteners for securing articles to supports : en
  • FR875907A - Washing channel for the preparation of coals and other materials : en fr
  • GB548279A - Improvements in or relating to hydraulic braking systems : en
  • GB548375A - Improvements relating to the treatment of oils with selective solvents : en
  • CA407781A - Solder flux : en fr
  • FR875928A - Monocoque body : en fr
  • FR875925A - Electric stove-oven : en fr
  • GB548276A - Improvements in or relating to the preparation of sulphonic derivatives of organic materials : en
  • FR51526E - Starting device for internal combustion engines : en fr
  • AU115940B2 - Frequency modulation system : en
  • US2297764A - Prepared fondant sugar and fudge mixture : en
  • FR875864A - New product usable as filament, film, leather, sponge, artificial rubber, and its manufacturing process : en fr
  • FR875883A - Advanced duplicator machine : en fr
  • GB548340A - Improvements relating to pre-fabricated portable huts, sheds, houses and the like : en
  • DE696762C - Process for regulating company sizes : de en
  • GR9986B - INSULATORS SEPARATED BY ELECTRIC ACCUMULATORS. : el en
  • GB548284A - Improvements in baby's pacifiers : en
  • US2297862A - Switch box : en
  • FR875814A - Improvements to small electric accumulators for flashlights : en fr
  • GB548405A - Electric circuit arrangements for reducing the variations in the starting potential of gaseous electric discharge devices : en
  • GB548274A - Improved manufacture of sheet metal containers : en
  • FR875926A - Hot peeling process for steel ingots : en fr
  • FR875900A - Water tube boiler : en fr
  • DE725873C - Device for the optional actuation of several hand pumps for aircraft : de en
  • US2298259A - Side door construction for dry ice service refrigerator cars : en
  • DE726068C - Grooving and parting device for revolver swivel arm : de en
  • FR875894A - Reverse combustion gasifier generator : en fr
  • FR875830A - Heat treatment of nickel and molybdenum alloys : en fr
  • US2297914A - Pie pan : en
  • US2297956A - Single duct, hydropneumatic, welltool actuator : en
  • US2298109A - Vapor electric device : en
  • DE726162C - Locking bolt for double-leaf gates : de en
  • FR51504E - Deformable tube for pasty and liquid products, as well as its manufacturing process : en fr
  • DE725741C - Process for the production of glutaric acid : de en
  • DE726139C - Lock register for signal boxes : de en
  • DE726313C - Device for measuring the earth's magnetic field : de en
  • FR875824A - Isomerization process : en fr
  • FR875877A - Foam producing apparatus using air : en fr
  • US2297841A - Time-delayed control mechanism : en
  • US2297857A - Faucet : en
  • US2297707A - Mechanical movement : en
  • US2297821A - Combustion control and safety alarm system : en
  • US2297828A - Coupling : en
  • GB548424A - Improvements in or relating to thermionic valve amplifiers : en
  • GB548437A - Improvements in surgical pads : en
  • US2298014A - Nut locking device : en
  • DE726081C - Process for the production of a pest repellent : de en
  • DE726185C - Device for point-by-point scanning of moving films and objects : de en
  • FR875827A - Fuel for internal combustion engines : en fr
  • GB548412A - Improvements in or relating to the windings of electrical machines having commutators : en
  • FR875973A - Switching device for reversible motors : en fr
  • CA407885A - Electrical contact protection : en fr
  • GR9989B - SIDE SEEDS. : el en
  • US2297952A - Supporting means for forming concrete floors : en
  • USD133989S - Design for a book end : en
  • DE726331C - Wheel for devices and machines : de en
  • US2297811A - Production of nitriles : en
  • DE726077C - Circuit arrangement for linearizing the control voltage-useful current characteristic of a multi-grate tube : de en
  • DE726263C - Frequency-dependent damping network consisting of a series or parallel connection of two or more four-pole terminals : de en
  • DE726288C - Ceiling stone with upper longitudinal ribs : de en
  • US2297746A - Process for the production of cellulosic structures : en
  • FR51512E - Improvements in the construction of aircraft wings : en fr
  • FR875828A - Process for manufacturing fat in blocks or bars : en fr
  • FR875801A - Mixed traction transport method : en fr
  • GB548290A - Manufacture of improved water-softening materials : en
  • GB548418A - Improvements in or relating to machines for inking edge portions of workpieces : en
  • US2298105A - Control device for fluid power transmitters : en
  • US2297698A - Treating bibulous paper : en
  • US2297942A - Step valve for compressors : en
  • US2297964A - Casement window : en
  • GB548364A - An improved apparatus for removing and melting snow deposited on roads and railway tracks : en
  • USD134010S - Combined mechanical pencil and knife : en
  • GB548283A - A stand or support for a telephone and telephone directory : en
  • DE726029C - Mold for the production of wheels, especially for mine cars : de en
  • DE726249C - Coupling piece for connecting a trailer to a bicycle : de en
  • DE726276C - Automatic lathe for bar material : de en
  • DE726291C - Safety device on vessels, especially feed water tanks : de en
  • DE726089C - Keyed high frequency tube transmitter : de en
  • US2298064A - Chemical manufacture : en
  • US2298124A - Ultra violet ray liquid sterilizer : en
  • DE726202C - Accelerated wound healing in plants : de en
  • US2298248A - Key holder : en
  • US2298059A - Color correction filter employing light-polarizing material : en
  • GB548343A - Improvements in and relating to door opening and door checking devices : en
  • GB548352A - Chlorination of titanium bearing materials : en
  • US2297875A - Starting gate : en
  • GB548348A - A new or improved foldable bicycle : en
  • FR875802A - Method and device for the manufacture of concrete piles or the like for foundations : en fr
  • FR875888A - Method and machine for automatically obtaining notebooks formed from sheets engaged in one another : en fr
  • DK60224C - Security closure for Windows. : da en
  • US2298092A - Phase modulation : en
  • US2298247A - Combined tie clip and pencil : en
  • DE718756C - Process to increase the shelf life of skin creams u. like : de en
  • DE726124C - Optical sound recording device for sprout writing : de en
  • US2297772A - Signaling system : en
  • DE726041C - Process for the production of complex compounds of rare earths or their aqueous solutions : de en
  • FR51549E - gasifier scrubber : en fr
  • GB548320A - Improvements in nozzles for concrete projection apparatus : en
  • GB548443A - Improvements in television and like transmission : en
  • US2298057A - Mold structure : en
  • DE726212C - Process for the production of effect threads from cotton fibers or other vegetable fibers : de en
  • DE726214C - Process for the preparation of anhydrous diazoamido compounds of cyclic amines : de en
  • US2298190A - Suppression of cross talk : en
  • US2298175A - Heating apparatus : en
  • US2297774A - Hydrocarbon conversion : en
  • DE725735C - Process for the production of finely divided metal layers for mosaic raster photocells for charge storage : de en
  • US2297718A - Fluid control valve : en
  • US2298132A - Means for forming hollow structures : en
  • GB548327A - Improvements relating to apparatus for transporting hot foods : en
  • FR875929A - Portable pneumatic rotary punch for coal and other minerals : en fr
  • CA407805A - Motor control system : en fr
  • US2298039A - Interpolymer of dimethyl itaconate and ethyl methacrylate : en
  • US2298139A - Gas cleaning method : en
  • US2297847A - Article separating mechanism : en
  • US2298200A - Hoist control mechanism : en
  • FR51522E - Automatic distributor and regulator device for compressed fluid brake systems for vehicles : en fr
  • FR51542E - Improvements to discharge tubes : en fr
  • GB548358A - Improvements in or relating to clamps or gripping devices for instance for vehicle wheels : en
  • FR875852A - Method and devices for operating acetylene internal combustion engines for motor vehicles and other applications : en fr
  • GB548351A - Improvements in or relating to grinding wheel truing mechanism : en
  • AU55641A - Improvements in or relating to milling, engraving and like copying machines : en
  • USD134027S - Design for a brooch or similar article : en
  • FR875971A - Corpuscular ray microscope equipped with at least two magnifying lenses : en fr
  • US2297700A - Sifting apparatus : en
  • FR875897A - Amphibious motor vehicle : en fr
  • GB548386A - Improvements in or relating to retractable undercarriages for aircraft : en
  • FR51502E - Agglomerating machine : en fr
  • DE726034C - Control device for fuel injection pumps : de en
  • GB548296A - Improvements relating to unidirectional electrical inductive apparatus : en
  • DE726224C - Electric headlights, especially for automobiles and similar vehicles : de en
  • FR875854A - Pavement reprofiling machine : en fr
  • GB548288A - Hose and like clips : en
  • GB548295A - Improvements in or relating to hydraulic tele-control devices : en
  • FR875832A - Improvement in gasifiers for mineral coals : en fr
  • FR875912A - Dental prosthesis apparatus and method : en fr
  • FR875955A - Amplifier tube for ultra-high frequencies : en fr
  • DE1523748U - : de en
  • FR875982A - Tool frame for horticultural instruments : en fr
  • CA407845A - Oil well treatment : en fr
  • USD133975S - By attorn eys : en
  • DE726196C - Operating circuit for gas or metal vapor filled high voltage rectifiers : de en
  • DE726269C - Process for improving plastic masses : de en
  • DE726325C - Adjustment device for arranged on aircraft, depending on the position of the throttle lever inevitably actuated means to increase the lift : de en
  • GB548426A - Scorer for darts, billiards and similar games : en
  • AU272941A - Improved concrete mixer : en
  • US2298156A - Manufacture of brushes : en
  • US2298192A - Thermistor circuit : en
  • FR875874A - Knife comprising recesses made on one or both sides of the blade : en fr
  • FR875966A - Clutch device for gear changes with friction clutches conjugated, in pairs, with the gears : en fr
  • US2298234A - Switching apparatus : en
  • DE726254C - Hip belt : de en
  • DE726062C - Control shaft magneto for internal combustion engines : de en
  • DE726122C - Method and device for producing threads from inorganic masses that are plastic in the heat, in particular glass : de en
  • GB548421A - Television broadcast system : en
  • USRE22197E - Zzxot : en
  • USD133980S - Design for a picture frame : en
  • DE726042C - Amplifier circuit with simultaneous current and voltage negative feedback : de en
  • DE726308C - Truss pad with adjustable pressure pad : de en
  • GB548355A - A mechanism for producing a combined wavering and rotating movement : en
  • DE726326C - Arrangement of rigid, automatic firearms in aircraft wings : de en
  • US2297954A - Tire casing spreader : en
  • GB548372A - Improvements in adjustable boring and reaming tools for lathes, boring and drilling machines : en
  • US2297837A - Testing apparatus : en
  • DK60201C - Apparatus for closing a gas tap or turning on an electric circuit breaker at a predetermined time. : da en
  • CA407835A - Motor delayed start connection : en fr
  • DE726207C - Locking device for aircraft rudders : de en
  • US2297950A - Filament mounting machine : en
  • US2298152A - Decorative memento : en
  • CA407882A - Insulating yarn or roving manufacture : en fr
  • US2297760A - Imidazole derivatives and process of making same : en
  • US2297768A - Liquid circulator and heater for tanks : en
  • US2298008A - Brake : en
  • USD134032S - Design for a pin cup : en
  • US2297893A - Rail welding : en
  • CA407897A - Train pipe connector : en fr
  • US2297991A - Control of electric circuits : en
  • US2298077A - Press : en
  • USD133983S - Design for bric-a-brac : en
  • US2297730A - Transfer mechanism : en
  • DE726032C - Safety device for fuel injection engines : de en
  • CA407770A - Stocking heel : en fr
  • US2298208A - Electric switch : en
  • CA407846A - Oil well treatment : en fr
  • CA407801A - Circuit breaker : en fr
  • US2298179A - Cabinet for dispensing sheet material : en
  • AU306841A - Improvements inconstant frequency variable dot picture telegraph systems : en
  • USD133982S - Design fob a hot food purveying store : en
  • DE726026C - Rotary slide valve controlling the inlet and outlet for piston pumps with two or more adjacent working areas : de en
  • DE726193C - Self-starting synchronous motor : de en
  • US2297842A - Container and seal therefor : en
  • US2298068A - Electromagnetic switch : en
  • US2298122A - Digitalis capsule : en
  • US2298147A - Textile printing process : en
  • US2298052A - Refrigerator : en
  • US2298178A - Mercury conserving switch : en
  • US2297745A - Grave box cover : en
  • DE726246C - Liquid shock absorbers, especially for motor vehicles : de en
  • US2297865A - Clamp device for container closures : en
  • US2297973A - Centrifugal casting machine : en
  • US2297701A - Process of dyeing animal fibers : en
  • US2298011A - Antifriction screw device : en
  • AU297141A - Improved holders for luminous tubes : en
  • CA407828A - Brake release control means : en fr
  • CA407861A - Propellant powder : en fr
  • DE726091C - Method for reducing the feedback in high frequency intermediate amplifiers in power lines : de en
  • FR51501E - : fr
  • CA407888A - Hat making machine : en fr
  • DE1523702U - : de en
  • GB548403A - New building unit for covering framed buildings and partitions, and capable of independent construction : en
  • CA407842A - Shaving machine : en fr
  • US2297904A - Propagation : en
  • US2297921A - Cyclic acetals : en
  • US2297963A - Automatic take-up device : en
  • US2298137A - Motor thermostat : en
  • GB548332A - Production of alumina from clay or other aluminous ore : en
  • CA407804A - Electric discharge device : en fr
  • AU115929B2 - Improved concrete mixer : en
  • CA407762A - Fertilizer spreader : en fr
  • US2298018A - Means for sharpening bits : en
  • US2298263A - mkzcs : en
  • US2297886A - Glow relay mounting : en
  • DE726019C - Electric three-phase oscillating drive for oscillating work equipment with linear oscillating movement : de en
  • DE726115C - Direction indicators for bicycles and motorcycles : de en
  • CA407844A - Lens facet grinding machine : en fr
  • GB548281A - Improved method and apparatus for the production of finely-divided solid particles : en
  • US2298097A - Photographic printer mechanism : en
  • US2297992A - Adjustable low-bed vehicle : en
  • US2297831A - Bolt : en
  • DE726104C - Fumigation tent for disinfestation of clothing and the like like : de en
  • US2298241A - Base plate for billet mold and the like : en
  • USD133986S - Design fok a lighting fixture : en
  • DE725984C - Process for improving the resistance of threads or fibers made of proteins, especially casein, to hot watery baths : de en
  • US2298229A - Transformer signaling and tripping : en
  • DE726012C - Arrangement for dividing a common transmission path into three mutually decoupled separate paths : de en
  • US2297984A - Cosmetic case : en
  • FR875867A - Electric heating body which can be used particularly as a heating plate for culinary appliances and a method of manufacturing this heating body : en fr
  • US2298021A - Propeller : en
  • US2298031A - Apparatus for making insulation life tests : en
  • US2297916A - Marine flagpole light and socket : en
  • CA407864A - Self-tightening chuck : en fr
  • DE726198C - Cleaning and cooling device made of metal for generator gas : de en
  • DE726067C - Mandrel : de en
  • DE726111C - Hydraulically controlled adjusting screw automatically at constant speed : de en
  • DE726247C - Motor vehicle or motor vehicle trailer with a multi-purpose convertible car body : de en
  • US2297753A - Valve spring assembly : en
  • US2298081A - Apparatus for arranging musical compositions : en
  • US2298212A - Oil valve cleaner : en
  • US2298159A - Preparation of fresh meats : en
  • DE726230C - Cradle gear : de en
  • FR875856A - Process for the treatment of porous charcoals such as charcoal, new industrial products obtained, and improvements to coal gasifiers : en fr
  • GB548287A - Improvements in locking devices for aircraft undercarriages and like uses : en
  • US2297770A - Cotter pin : en
  • US2297946A - Carton liner for molded edibles and method of folding : en
  • DE726006C - Device for loading narrow-chamber sausages : de en
  • DE726250C - Change pen, especially multi-color pencil : de en
  • DE726304C - Device for testing the electrical or hydraulic equipment of the cell parts or large components of aircraft in connection with test tables : de en
  • DE726289C - Process to improve baking ability : de en
  • US2297790A - Mirror support : en
  • US2297818A - Circuit interrupter : en
  • USD133976S - Design for a lapel pin ob the like : en
  • FR875965A - Improvements to antenna systems : en fr
  • AU115908B2 - Improvements in or relating togas producers : en
  • GB548359A - Improvements in or relating to the manufacture of flexible materials, particularly for camouflage : en
  • US2298209A - Bottle carrier : en
  • GB548299A - Electrical frequency filter arrangement : en
  • US2297767A - Electroautomatic advertising machine : en
  • US2298114A - Spark gap device : en
  • DE726233C - Device for measuring the total content of several pressure vessels : de en
  • DK60216C - Device for Magasing gramophones. : da en
  • FR51545E - Secondary electron amplifier : en fr
  • FR875935A - Sheath for matchboxes : en fr
  • FR875952A - Process for the preparation of 6- (p-amino-benzene-sulfonyl) -amino-2.4-dimethyl-pyrimidine : en fr
  • US2297699A - Surface cutting tool : en
  • GB548419A - Improvements in balancing arrangements for electricity supply in telegraph and other systems : en
  • DE726052C - Device for generating very weak treatment currents with variable direct and alternating currents : de en
  • US2298029A - Refrigeration : en
  • AU115906B2 - Improvements in cathode ray tubes : en
  • CA407803A - Circuit breaker : en fr
  • DE725742C - Process for the preparation of ª ‡ -dicarbonyl compounds of the cyclopentanopolyhydrophenanthrene series : de en
  • DE726177C - Device for automatic control of the paper web tension in rotary printing machines : de en
  • GB548432A - Improvements in or relating to machines employed in screwcutting operations : en
  • USD133988S - Design for a combined manicure con- : en
  • CA407822A - Ultra-violet discharge lamp : en fr
  • FR875950A - Method for the magnetic analysis of mixtures of substances, in particular gas mixtures : en fr
  • US2297765A - Key removing tool : en
  • FR51513E - Group of axle bodies suspended from the frame in a flexible manner : en fr
  • DE726009C - Key lock for railway security purposes : de en
  • DE726126C - Folding top, especially for motor vehicles : de en
  • US2297802A - Insulated holder and tightener for wire fences : en
  • US2297827A - Stone cutting and finishing machine : en
  • US2298162A - Gelatinous sheets, films, and plastic masses : en
  • US2297823A - Internal combustion engine : en
  • FR51525E - New development in viscose manufacturing : en fr
  • DE726130C - Process for dyeing animal fibers and other nitrogenous substances : de en
  • DE726255C - Process for the production of a fermented beverage from malt and whey : de en
  • DE726275C - Rotary piston internal combustion engine : de en
  • FR875811A - Acetylene gas generator : en fr
  • FR875983A - Process for making coal agglomerates : en fr
  • DE726097C - The use of gold alloys for dental purposes : de en
  • GB548319A - A method of minimising breakage of glass during the production of a ground or polished continuous strip of glass : en
  • FR875998A - Lawn mower : en fr
  • FR875948A - Socket outlet : en fr
  • GB548396A - Apparatus for converting a direct voltage into a frequency proportional thereto : en
  • GB548406A - Improvements in and relating to actuating mechanism for windows, doors and the like : en
  • CA407872A - Electrical discharge device : en fr
  • DE726008C - Process for the preparation of papaverine-like tetrahydroisoquinoline compounds : de en
  • DE726055C - Control for crane trolleys, especially trolleys : de en
  • GB548325A - Preparation of improved vitaminous products : en
  • GB548417A - Improvements in or relating to gun mountings : en
  • US2297869A - Suspension support for electric lighting fixtures : en
  • US2298107A - Camera : en
  • USD133981S - Design fob a finger ring : en
  • CA407780A - Surface cavity filling process : en fr
  • AU115937B2 - Improvements in and relating to door structures : en
  • US2297731A - Processes for rendering textiles water repellent : en
  • US2297810A - Drain fitting : en
  • US2298203A - Rivet : en
  • CA407806A - Electric power controlling system : en fr
  • AU115948B2 - Improved powerlift mechanism for raising and lowering tractor drawn implements : en
  • AU115949B2 - Improvements in or relating to filters for the filtration of fluids : en
  • CA407814A - Electrical braking system for diesel vehicles : en fr
  • US2298080A - Lubricating oil for diesel engines : en
  • CA407904A - Circular weaving loom : en fr
  • US2297819A - Circuit selecting switch : en
  • CA407783A - Electric switch : en fr
  • CA407824A - Discharge device trigger : en fr
  • DK60215C - Weight Balance with Weighing Plan and with Brake to Cushion the Balance Fluctuations. : da en
  • US2298096A - Washing machine : en
  • CA407863A - Machine tool thermostatic control : en fr
  • USD134008S - Design fob a coat : en
  • DE726010C - Device for printing or remote printing of characters, consisting of rotatable type wheel, setting ring and mechanically or electromagnetically acting stop device : de en
  • US2298165A - Ironing table : en
  • DE722740C - Porous filling compound for acetylene bottles : de en
  • DE726017C - High-voltage system, in particular open-air system with double busbars : de en
  • DE726056C - Press for gluing plywood panels or the like. : de en
  • US2297762A - Gas burner : en
  • US2298240A - Ignitron welding timer : en
  • FR875840A - Engine spark plug improvements : en fr
  • US2297732A - Photographic color process involving the formation of azo dye images : en
  • US2297771A - Box fastener : en
  • FR875927A - Device for stacking sheets separated from a large strip of paper by a transverse cutter : en fr
  • DE726022C - Multi-anode converter with vapor or gas discharge path and arc-like discharge : de en
  • AU353841A - Improvements in and relating to door structures : en
  • US2298045A - Optical compensating device : en
  • US2298237A - Lead base coating alloy : en
  • DE726274C - Collection device for potato harvesters : de en
  • DE726277C - Method and device for cleaning paper machine screens : de en
  • US2297694A - Washing machine : en
  • GB548294A - Improvements in or relating to record card controlled printing machines : en
  • USD134035S - Design for a pin clip : en
  • DE726218C - Electric circuit breaker with arc extinguishing by means of extinguishing gas generated by the arc from solid gas-emitting switch room walls : de en
  • DE726050C - X-ray tube with focusing coil : de en
  • AU266041A - to Improvements in or relating tothe cleaning of producer gas andthe like : en
  • DE726203C - Flywheel igniter : de en
  • US2298054A - Motor vehicle : en
  • DE726158C - Detachable coupling for traction and pressure means with guide sleeve, cables or the like. : de en
  • FR875903A - Gear shift mechanism for motor vehicles : en fr
  • FR875962A - Arc rectifier with electrodes in the gas stream : en fr
  • CA407797A - Welding equipment : en fr
  • GB548310A - Improvements in or relating to heaters for liquids : en
  • GB548380A - Manufacture of phenylcyclohexyl-fatty acids and esters thereof : en
  • FR875916A - Spectrographic examination apparatus : en fr
  • US2297845A - Stool attachment : en
  • FR875968A - Contact control of contact converters : en fr
  • US2298023A - Radio antenna : en
  • USD133998S - Combined callous remover and nail cleaner : en
  • USD134036S - Design for a pin clip : en
  • DE726011C - Telecommunication circuit for telegraphy and telephony : de en
  • GB548306A - Improvements in or relating to enclosed electric switchgear : en
  • DE690423C - Mills with a viewing device attached to the grinding chamber : de en
  • US2297988A - Motor construction : en
  • DE726221C - Compensation device for electrical measuring purposes with more than two decades : de en
  • DE726025C - Device for automatic regulation of the coolant circulation in mercury vapor discharge vessels : de en
  • DE726259C - Transformer for push-pull B-amplifier : de en
  • US2298001A - Ironing table structure : en
  • FR875946A - Device for automatically rotating, relative to their seat, indirectly controlled valves of internal combustion engines with valve distribution : en fr
  • DE726240C - Four-stroke engine in boxer arrangement : de en
  • GB548336A - An improved method of and apparatus for the heat treatment of rubber and other plastics and other materials which are relatively poor conductors : en
  • US2297907A - Illuminated cabinet : en
  • AU115910B2 - Improved holders for luminous tubes : en
  • US2298254A - Electric immersion heater for liquid electrolytes : en
  • US2298009A - Coin chute deflector : en
  • US2297960A - Wheel hub for velocipedes : en
  • DE725473C - Electron collecting coil : de en
  • DE726167C - Polarized relay : de en
  • CA407848A - Oil well treatment : en fr
  • US2298119A - Connector device : en
  • CA407763A - Window regulator : en fr
  • CA407816A - Hosiery machine drive : en fr
  • DE726054C - Device for winding hair in curls and holding them : de en
  • DK60203C - Procedure for the production of 21-aldehydes of the saturated or unsaturated series of impregnations. : da en
  • US2297941A - Box : en
  • US2297769A - Hydrogenation of alkyl aryl ketones : en
  • USD133993S - Design fob a scale : en
  • CA407851A - Optical system : en fr
  • US2297704A - Fluid system : en
  • CA407889A - Shipping case : en fr
  • US2297915A - Electric razor : en
  • US2298143A - Reclosing circuit interrupter : en
  • USD133985S - Ehrsam cutting implement sheath : en
  • CA407890A - Oil-bearing horizon penetration detecting method : en fr
  • CA407827A - Synchronous motor control system : en fr
  • DE726205C - Process for cleaning used machine parts made of light metal : de en
  • FR875887A - Method and device for the production of magnesium : en fr
  • FR875931A - Pressure fluid servo control unit for hydraulic vehicle brakes : en fr
  • US2298078A - Plastic masses similar to factice and linoxyn : en
  • GB548427A - Improvements in surgical bandages, binders for babies, and the like : en
  • GB548435A - Improvements relating to carbonization apparatus : en
  • FR875924A - Self-priming device for centrifugal, helico-centrifugal or helical pumps, or any similar system : en fr
  • US2298224A - Auxiliary lighting device for runway marker lights : en
  • US2298060A - Screen : en
  • US2297882A - Carriage for cutting or sawing machines : en
  • DE726085C - Device for adjusting the rolling stock inlets and outlets : de en
  • DE726094C - Gas or vapor-filled electrical discharge vessel : de en
  • DE726267C - Base for pots to be heated on gas, alcohol and other cooking devices : de en
  • US2298017A - Process for plasticizing lignocellulosic materials : en
  • US2298242A - Steam separator : en
  • USD134037S - Design for an airplane : en
  • USD134022S - Design for a jewelry pin : en
  • FR875976A - Guide for machine tool cart : en fr
  • US2297980A - Folding vise stand : en
  • US2297902A - Mechanical locking device for pistons and the like : en
  • US2298048A - Puzzle : en
  • DE726140C - Circuit arrangement for producing a negative capacitance or a negative inductance : de en
  • US2298134A - Ship propulsion system : en
  • FR875869A - Tool refinements for metalworking : en fr
  • GB548318A - Improvements in or relating to apparatus for measuring dimensions : en
  • US2297858A - Fabric centering device : en
  • DE726238C - Annaehknopf : de en
  • US2298113A - Lightweight electric iron : en
  • US2297789A - Transcribing apparatus : en
  • US2297692A - Fluid flywheel control : en
  • US2297892A - Air pressure release for closed automobiles : en
  • US2298102A - Reinforced concrete : en
  • CA407820A - Circuit breaker contact means : en fr
  • DE726039C - Machine for packing yarn bobbins : de en
  • DE726283C - Flat molded piece made of rubber, synthetic rubber or the like for making a gas protective mask : de en
  • FR875985A - Process for the preparation of hydrophilic and highly polymerized polymerization and condensation products of the superpolyamide type : en fr
  • GB548388A - Improvements in and connected with electric regulators of the carbon pile type : en
  • US2297800A - Standard frequency oscillator : en
  • US2298142A - Unitary spoke anx tueab : en
  • US2297741A - Battery cover mold : en
  • IE17666L - U.h.f. electrical oscillators : en
  • US2298168A - Differential pressure measuring device : en
  • FR875896A - Handle for handling butter baskets : en fr
  • FR51544E - Receiver with automatic volume and selectivity adjustment : en fr
  • US2297929A - Increasing the ink receptivity of metallic surfaces : en
  • US2298002A - Cabinet ironing board : en
  • US2297894A - Coal mining machine : en
  • US2298100A - Signaling system and control therefor : en
  • FR875978A - Method for establishing discharge vessels with photocathode : en fr
  • GB548390A - Improvements in or relating to lubricating compositions : en
  • GB548291A - A steam and/or air reverse for engines : en
  • FR875914A - Heavily loaded soaps : en fr
  • US2298108A - Circuit maker and breaker : en
  • US2297781A - Lamp structure : en
  • US2297993A - Target device : en
  • US2297783A - Grate : en
  • DE726152C - Process for the preparation of water-insoluble monoazo dyes : de en
  • US2297766A - Anode production : en
  • US2297686A - Chromium-vanadium-iron alloy cutting tool : en
  • US2297868A - Means for detecting and indicating temperature : en
  • US2297895A - Coiled-coil product and method of and apparatus for making the same : en
  • DE726044C - Arrangement for achieving a voltage that is frequency-independent in a wide range at the capacitive consumer of a noise receiver : de en
  • US2298035A - Shoe counter : en
  • US2297885A - Flaring tool : en
  • US2298182A - Vibrating screen : en
  • DE726176C - Preheating of a turbine for hot propellant provided with an impeller disc not penetrated by the shaft : de en
  • FR875963A - Process for purifying air of gaseous impurities : en fr
  • GB548409A - Improvements in or relating to the manufacture of power transmission and like belts : en
  • USD134028S - Design for a brooch or similar article : en
  • US2297903A - Garment carrying frame for luggage cases : en
  • FR51546E - Single tube relaxer : en fr
  • GB548360A - Improvements in the production of syrup from farinaceous materials : en
  • DE726216C - Impulse direction finder : de en
  • FR51547E - Device for photoelectric scanning of sound tracks recorded by the differential process : en fr
  • FR875808A - wet gas scrubber for gasifier : en fr
  • US2297801A - Azo dyes : en
  • DE726295C - Device for the production of ice by means of natural cold : de en
  • FR875986A - Process for photographic recording of sound or for making sound recordings : en fr
  • US2297716A - Method of producing alkyd resins : en
  • USD134012S - Design for a dkess : en
  • US2298176A - Swivel unit : en
  • FR875871A - Horizontal retort furnace for the production of coke and gas with change in the direction of circulation of the heating gases : en fr
  • FR875876A - Motor vehicle of aerodynamic exterior shape with dorsal fins : en fr
  • US2297846A - Method of and apparatus for producing stereograms : en
  • US2297898A - Work manipulating and weighing device : en
  • US2297947A - Cartridge for air guns : en
  • GB548286A - Sewing machine lubricating means : en
  • US2297803A - Printing apparatus : en
  • US2297815A - Air rotor : en
  • DE726058C - Device for measuring grooved shafts and bores during machining with a device to prevent the probes from falling into the grooves : de en
  • US2298228A - Terrazzo grinder : en
  • US2298095A - Washing machine : en
  • US2297675A - Process for treating gaseous hydrocarbons : en
  • US2298007A - Hydraulic actuator : en
  • US2297853A - Heating steam turbine : en
  • DE726119C - Inspection car for bridges : de en
  • US2298220A - Telegraph signal regenerator : en
  • US2298136A - Combination shipping and display carton : en
  • SE105615C1 - : en
  • USD134009S - Design for a coat : en
  • DE726028C - Sound absorbers, especially for compressors and fans : de en
  • US2297713A - High-tension insulator : en
  • DE726106C - Piston internal combustion engine : de en
  • CA407831A - Lightning arrester : en fr
  • DE725134C - Float carburetor for internal combustion engines : de en
  • CA407857A - Hose connection : en fr
  • CA407758A - Incandescent lamp : en fr
  • US2298204A - Telephone system : en
  • US2298225A - Permanent magnet material and production thereof : en
  • FR876000A - Method for preparing hydrazine : en fr
  • FR875959A - Method and apparatus for metering cut tobacco for making packages of smoking tobacco : en fr
  • US2297933A - Suction cleaner : en
  • DE726134C - Method and device for hardening steel in a gas muffle furnace : de en
  • DE726157C - Light metal pistons, especially aluminum pistons for internal combustion engines : de en
  • GB548361A - A method of and means for preserving and packing foodstuffs or other perishable substances in containers : en
  • FR875981A - Extendable cultivator : en fr
  • US2297876A - Controller mechanism for general purposes : en
  • US2298216A - Weight indicator for rotary drilling : en
  • USD134021S - Design fob a jewelry pin : en
  • CA407764A - Paper clip : en fr
  • US2298164A - Control system : en
  • FR875849A - Free-expansion assembly system for engine components : en fr
  • CA407880A - Telegraph transmitter : en fr
  • DK60207C - Method and Apparatus for Insulating an Electrical Conductor. : da en
  • CA407794A - Welding equipment : en fr
  • CA407854A - Exercising machine : en fr
  • AU115972B2 - Packaging : en
  • US2297727A - Diver toy : en
  • US2298205A - Telephone system : en
  • CA407778A - Automobile device for snow and mud : en fr
  • CA407825A - Insulating material : en fr
  • AU309141A - Phonograph record reproducing system : en
  • DE726144C - Radio direction finder for optical display of the DF minimum or maximum : de en
  • GB548439A - Improvements relating to triangulated frameworks and their application to the construction of bridges and the like : en
  • DE726217C - Receiver with voting indicator : de en
  • DE726226C - Electrically heated tiled stove : de en
  • FR875967A - Discharge tank filled with gas or vapor, in particular mercury vapor rectifier : en fr
  • CA407761A - Engine piston : en fr
  • CA407768A - Roller screen for windows : en fr
  • CA407899A - Extensible cord : en fr
  • CA407818A - Carrier frequency modulation : en fr
  • DE726318C - Spark plug assembly for deflagration chambers, in particular of deflagration combustion turbines : de en
  • DE726178C - Automatic hardening device for conical knife blades, especially table knife blades : de en
  • DK60208C - Cable end closure. : da en
  • AU159841A - Improvements in and relating tothe treatment of arrowroot : en
  • DE725391C - Process for the preparation of heterocyclically substituted tetrahydronaphthols : de en
  • DE726120C - Power foot switch for trolleybuses : de en
  • GB548444A - Improvements in and relating to gas blast electric circuit breakers : en
  • CA407808A - Infra-red sensitivity increasing method : en fr
  • DE726188C - Method for the transmission of a message or presentation via quad lines : de en
  • FR51536E - Chassis frame with side members with a closed contour and serving as the lower body frame : en fr
  • DE726234C - Continuous impact machine for the simultaneous determination of the flexural vibration strength of several test bars : de en
  • FR51517E - Footwear manufacturing process and industrial product resulting from said process : en fr
  • DE726268C - Suspension device for balls of fabric : de en
  • US2297949A - Deflecting system : en
  • US2298071A - Stiffened fabric : en
  • FR51532E - Injection pump for fuels or other liquids : en fr
  • AU115947B2 - Improvements in or relating to shoe trimming machines : en
  • FR875902A - Powder or granular material dispenser : en fr
  • FR875953A - Blocking layer cell comprising one or more grids : en fr
  • US2297763A - Dehumidifier control : en
  • US2298140A - Telescopic extensible antenna : en
  • US2298154A - Surface condenser : en
  • FR875823A - Hydrocarbon conversion : en fr
  • GB548312A - Improvements in or relating to machines for joining veneers together edge-to-edge : en
  • US2297850A - Oil-level measuring stick : en
  • FR875937A - Device for supporting the mobile tobacco roll in cigarette making machines : en fr
  • CA407870A - Electrical impulse recording and reproducing method : en fr
  • GB548313A - Improved speed-ratio providing pulley or sprocket-wheel : en
  • CA407886A - Contact spring manufacture : en fr
  • GB548445A - Improvements relating to electromagnetic relays : en
  • DE726222C - Detachable attachment for ceiling canopies, shell holders, pipe sections and reflectors on a pendulum tube : de en
  • US2297976A - Scrubbing and polishing apparatus : en
  • US2297797A - Valve device : en
  • US2297918A - Torque controlled carburetor : en
  • DE726141C - Bass boost for radio receivers : de en
  • DE726149C - Operating circuit for alternating current fed gas discharge tubes : de en
  • FR51519E - Method and device for transmitting or receiving television signals : en fr
  • GB548357A - An improved arrangement for the reproduction of sound : en
  • GB548277A - Improvements in or relating to detonating devices for aircraft pyrotechnic devices, bombs and the like : en
  • US2297838A - Indicating device for electric clocks : en
  • DE726150C - Device for monitoring the operating status of an arc rectifier : de en
  • DE726147C - Damping device for hydraulic actuation devices, electrical high-voltage switches : de en
  • US2297691A - Electrophotography : en
  • US2297817A - Filter element and method of making the same : en
  • US2298230A - Cushioning pedestal : en
  • US2297999A - Compass : en
  • US2298103A - Combination range : en
  • US2297849A - Flatiron stand : en
  • CA407877A - Textile fabric : en fr
  • US2298135A - Rotary reel electric lawn mower : en
  • FR875804A - Small tilting and removable chassis for passenger car type : en fr
  • GB548297A - Improvements in electric flash lamps : en
  • GB548368A - Improvements in or connected with force transmission mechanism for dynamometers : en
  • US2298244A - Vertical file : en
  • US2297906A - Photographic developing device : en
  • US2298223A - Method and apparatus for manufacturing pottery ware : en
  • US2297744A - Vernier mechanism : en
  • US2298144A - Photographic camera and carrying case therefor : en
  • DE726110C - Paper holder for photographic enlarging devices : de en
  • CA407769A - Wheel mounting : en fr
  • US2298169A - Manufacture of diphenylacetophenone : en
  • US2297725A - Bathythermograph : en
  • US2297843A - Bait bucket : en
  • US2297927A - Tripod, particularly applicable to photographic cameras : en
  • USD133994S - Design for a toy airplane or similar article : en
  • AU115936B2 - Phonograph record reproducing system : en
  • DE725740C - Process for the production of gaseous hydrocarbons : de en
  • DE726327C - Brake for wheels of aircraft landing racks : de en
  • US2297793A - Communication system : en
  • US2297979A - Fitting for conduit construction : en
  • US2298163A - Control apparatus : en
  • US2297813A - Chain : en
  • US2298110A - Thermostat : en
  • US2298227A - Resoling and reheeling mold for footwear : en
  • AU305641A - Apparatus for the production and purification of gas for use in internal combustion engines : en
  • US2298207A - Telephone substation apparatus : en
  • US2298238A - Remotely controlled register : en
  • CA407817A - Cathode ray tube : en fr
  • CA407892A - Printing press feeding device : en fr
  • CA407866A - Pigmented resin : en fr
  • AU265941A - Improvements in or relating togas producers : en
  • FR875913A - Process for the preparation of an adhesive : en fr
  • GB548407A - Improvements in aeroplane wings of variable camber and area : en
  • DE725535C - Process for the preparation of tetrahydroisoquinoline compounds : de en
  • DE726248C - Arrangement of a disc brake in motor vehicle wheels : de en
  • US2297779A - Resistor construction : en
  • US2298074A - Manufacture of concrete building blocks : en
  • US2298044A - Molding machine : en
  • CA407881A - Louvre window : en fr
  • AU338241A - Improved core lifter for diamond drills : en
  • CA407809A - Photographic emulsion : en fr
  • AU115943B2 - Improvements in postal franking and like machines : en
  • US2297871A - Rubber cement : en
  • USD134033S - Design for a pin clip : en
  • AU115916B2 - Improvements in and connected with tractor attached implements : en
  • DE726051C - Vacuum vessel with rotating parts arranged inside, in particular Roentgen tubes with rotating anode : de en
  • DE726073C - Gas protective mask with speech device : de en
  • US2297953A - Honing machine : en
  • US2297784A - Grate : en
  • US2298073A - Electric circuits : en
  • US2298116A - foothorap : en
  • CA407898A - Spalling resistant refractory : en fr
  • DE726117C - Process for the production of a white writing board, e.g. B. made of wood, sheet metal or slate : de en
  • FR875951A - Automatic scallop : en fr
  • CA407782A - Solder flux : en fr
  • US2298030A - Photovoltaic cell : en
  • DK60211C - Spray container for powdered fabric. : da en
  • FR875969A - Electric cable with impregnated paper insulation : en fr
  • DE726320C - Valve body with hollow spindle and hollow disk head for high valve accelerations and decelerations : de en
  • GB548353A - Improvements relating to the formation of reflecting surfaces on glass : en
  • DE726075C - Method and device for drying running textile threads : de en
  • DE726123C - Sound absorbing plate : de en
  • CA407856A - Intermittent conveyer : en fr
  • US2297720A - Foil applying apparatus for bottles : en
  • US2298213A - Cylinder head : en
  • CA407765A - Torque converter : en fr
  • US2297910A - System for charging and cooling internal combustion engines : en
  • US2297722A - Treatment of styrene type compounds : en
  • US2297773A - Hydrocarbon conversion : en
  • US2298015A - Scrubber : en
  • US2297724A - Treatment of styrene type compounds : en
  • AU115912B2 - Improvements in automatic gain control for electrical transmission systems : en
  • DE726151C - Electrode boilers : de en
  • AU115945B2 - Apparatus for the production and purification of gas for use in internal combustion engines : en
  • FR51531E - Method for processing oscillation recording media intended to be reproduced optically : en fr
  • GB548371A - Improvements in and relating to blades for propellors or screws : en
  • DE700829C - Fire prevention system for mills and crushers : de en
  • US2298231A - Production of nitriles : en
  • US2298117A - Quick coupler for tubing : en
  • US2298038A - Shoe cementing apparatus : en
  • AU118241A - Decorticating machine : en
  • DE726092C - Pipe clamp, especially for stranded aluminum cables : de en
  • DE726208C - Safety stirrups serving as slip protection for pulleys of aircraft : de en
  • AU63441A - Improved powerlift mechanism for raising and lowering tractor drawn implements : en
  • DK60212C - Sofa or Ottoman with Magazine and folding Seat. : da en
  • DE710918C - Shaft seal : de en
  • DE726007C - Heating wall for smoldering : de en
  • DE726015C - Process for the production of electrical cables or lines with powder-form insulating material between a jacket tube and a core consisting of one or more conductors : de en
  • DE726266C - Thread clamping device for knitting machines, especially for flat weft knitting machines : de en
  • AU189141A - Improvements in postal franking and like machines : en
  • CA407878A - Shock absorber : en fr
  • CA407906A - Fabric printing process : en fr
  • CA407759A - Sound producing device : en fr
  • DE726057C - Ring gauge for the machining of materials with relatively large thermal expansion : de en
  • AU115944B2 - Improvement in hatmaking apparatus and method of operating same : en
  • DE726190C - Multiphase power generator of the inductor type, especially for charging vehicle batteries via rectifiers : de en
  • GB548289A - Improvements in or relating to collapsible boxes, cases and the like : en
  • US2297938A - Lister mounting for ditch cleaners : en
  • US2298087A - Adjustable support mechanism : en
  • US2297969A - Baking oven : en
  • US2297994A - Douche : en
  • DE725722C - Device for the direct treatment of vegetable fibers with chlorine : de en
  • FR875930A - Device for taking into account several correction quantities in the printing of color films : en fr
  • FR875807A - Manufacturing and assembly processes of so-called stepped soles, allowing the application of rods of all kinds : en fr
  • US2297917A - Automatic gas burner lighter : en
  • FR51529E - Enhancements to transit time generators : en fr
  • GB548416A - Improvements in or relating to fabricated boards for building construction : en
  • AU304641A - Frequency modulation system : en
  • GB548399A - Improvements in and relating to riveted or like joints in brittle materials : en
  • US2297682A - Visible index and progressive signal means : en
  • AU307041A - Improved circuit arrangements for compensating for varying temperature coefficient of frequency in electrical circuits : en
  • US2297711A - Combination key and permutation lock : en
  • US2297740A - Voltage-regulating equipment for precipitators or the like : en
  • US2297880A - Fruit and vegetable juicer : en
  • US2298034A - Antenna system : en
  • US2298065A - Brake tester device for automobiles or like vehicles : en
  • CA407883A - Power transmission : en fr
  • DE726271C - Process for the electrolytic digestion of aluminum phosphates : de en
  • FR875922A - Switching device for starting device with internal combustion engine as control machine : en fr
  • US2297959A - Casein sheet material : en
  • DE725748C - Process for the preparation of dyes of the anthraquinone series : de en
  • DE725843C - Process for the production of clumps of 2-cyano-4-acetylglutaric acid : de en
  • US2298125A - Diagnostic aid : en
  • USD133971S - Design for a display unit : en
  • US2297948A - Apparatus for making sectional blanks : en
  • US2298033A - Nonmetallic tire : en
  • DE726047C - Method for keeping the frequency of tube oscillators constant : de en
  • DE726290C - Process for the preparation of biuret and triuret from urea : de en
  • FR875810A - Manufacture of various elements from a standard blank : en fr
  • FR875861A - Filling pressure relief device : en fr
  • GB548280A - Improvements in and relating to the production of cellulose : en
  • US2298191A - Bottle carrier : en
  • DE726037C - Artificial sheet unit made of paper, cardboard or the like for the production of wreaths, garlands or the like. : de en
  • DE726113C - Steering device for long material wagons with steering lever attached to the rear chassis : de en
  • USRE22198E - Method and arrangement for trans : en
  • DE726020C - Electric drive with controllable coupling for conveyor reel or the like. : de en
  • GR9987B - METHOD IN UNDERWATER LIGHT FISHING EQUIPMENT. : el en
  • USD134030S - Design for a pin clip : en
  • CA407795A - Surface ornamenting machine : en fr
  • DE726321C - Device for dosing gaseous, viscous and viscous and solid powdery substances by means of two pumps connected in series : de en
  • US2298061A - Fire preventive system : en
  • DE726206C - Airplane wing with movable front part : de en
  • GB548410A - Improvements in and relating to couplings for trailers : en
  • US2297788A - Power lift : en
  • US2298013A - Fire control mechanism : en
  • US2298041A - Method of making dies : en
  • US2298088A - Tobacco product : en
  • GB548328A - A wheel with guard for planting potatoes and the like : en
  • US2298249A - Apparatus for making finned tubes : en
  • DE725536C - Process for the preparation of tetrahydroisoquinoline compounds : de en
  • DE726136C - Device for heating molten salts heated by electrodes : de en
  • DE726312C - Synthetic resin compound : de en
  • US2298257A - Control method and apparatus : en
  • DE726195C - Gas discharge tubes for voltage regulation : de en
  • US2297816A - Electrical control system : en
  • US2298051A - Electric flash welding machine : en
  • US2297754A - Method of locating strata in wells and electrode apparatus therefor : en
  • US2298157A - Massaging device : en
  • FR875886A - Acid resistant drum filters manufacturing process : en fr
  • GB548363A - Improvements in and relating to bearings or journals : en
  • FR875910A - Bi-metallic contact thermometer : en fr
  • FR51507E - Improvements to circular looms : en fr
  • DE726219C - Magnetic electric small machine, especially for bicycles or the like. : de en
  • CA407823A - Electrode support : en fr
  • FR875805A - Automotive Equipment System for Acetylene Gas Operation : en fr
  • GB548404A - An improved hardness testing instrument : en
  • CA407771A - Water column : en fr
  • CA407775A - Coating method and product : en fr
  • US2297778A - Brinell hardness testing machine : en
  • US2297729A - Screen frame : en
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  • FR875979A - : fr
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  • US2297844A - Optical device : en
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  • DE726227C - Process for the production of carboxylic acid chlorides and carboxylic acids : de en
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  • FR875836A - Flexible wooden shoe sole : en fr
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  • FR875837A - Advanced hydraulic jack : en fr
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