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  • US1921786A - Nonlinear circuit : en
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  • US1921530A - Flexible nonbreakable pipe stem joint : en
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  • US1921505A - Low apparent density sodium carbonate : en
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  • GB396793A - Improvements in or relating to electrically controlled clock systems : en
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  • US1921717A - Method of making dichloroacetic acid : en
  • US1921488A - Bearing : en
  • US1921168A - Apparatus for controlling transmitters : en
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  • FR750481A - Wooden tiles for floors and coverings : en fr
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  • US1921623A - Method of splicing rubber articles : en
  • US1921662A - Rotary steam engine : en
  • US1921921A - Sponge washer : en
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  • US1921448A - Oscillation circuit for short-wave generators : en
  • US1921217A - Safety device : en
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  • GB396788A - Improvements in or relating to tobacco feeding devices : en
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  • US1921469A - Film editing machine : en
  • US1921751A - Method of treating petroleum emulsions : en
  • US1921109A - Conveyer system : en
  • US1921961A - Apparatus for connecting alpha source of acoustic waves with several listeners for alpha suitable time : en
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  • US1921324A - Wood preserving media : en
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  • FR750544A - Improvements to Aircraft Having Rotary Lifting Means : en fr
  • FR750342A - Process for using sulfur-containing oils in excipients consisting of fatty bodies : en fr
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  • US1921812A - Pole setting apparatus : en
  • GB396771A - Improvements in or relating to sliding windows : en
  • US1920984A - Reversible feed mechanism for machine-guns : en
  • US1921142A - Carburetor : en
  • US1921282A - Gas equalizer for internal combustion engines : en
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  • GB396784A - Improvements in or relating to insulated electrical conductors : en
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  • US1921421A - Removable guide pin : en
  • US1921226A - Signal receiving system : en
  • AT134489B - Device for forming hand chains. : de en
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  • GB396515A - Improvements in machines for shearing animals : en
  • GB396544A - Improvements in or relating to governing or regulating devices for power plant : en
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  • FR750264A - Improvements to mechanical caps : en fr
  • DE582280C - Pattern device for jacquard flat knitting machines : de en
  • AU719832A - Improved sock or stocking : en
  • US1921167A - Sheet feeding apparatus : en
  • CA334644A - Vise : en fr
  • FR750278A - Device for regulating the temperature of a fluid : en fr
  • CA334648A - Brace end : en fr
  • US1921618A - Nose ring fitting apparatus : en
  • US1921885A - Fertilizer attachment for planters : en
  • FR750525A - Polishing liquid for cellulose lacquer : en fr
  • GB396751A - Improvements in and relating to secondary electric cells : en
  • FR750376A - Improvements to devices for obtaining ions at high speed : en fr
  • FR750448A - Molding for electrical pipes : en fr
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  • GB396713A - Improvements in or relating to the manufacture of safety glass : en
  • FR750583A - Safety closure for letters and securing device for this : en fr
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  • US1921075A - Trimming machine : en
  • US1921121A - Shock absorber : en
  • US1921440A - Method of and apparatus for skinning fish : en
  • US1921465A - Gas generator : en
  • DE582267C - Process for the production of sulfonic acids and their conversion products : de en
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  • US1921767A - Method of making acid halides : en
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  • US1921978A - Connecting ring : en
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  • US1921638A - Basic bismuth compound of camphocarbonic acid : en
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  • US1921527A - Automatic feeding device for bar sizing machines : en
  • GB396587A - Improvements in or relating to carburettors : en
  • US1921103A - Radio log and holder therefor : en
  • US1921513A - Floor finishing machine : en
  • FR750456A - Educational game constituting a global, analytical and synthetic reading method at the same time : en fr
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  • US1920985A - Pump controlling mechanism : en
  • US1921905A - Hydroelectric installation : en
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  • US1921678A - Method of increasing power of turbine plants : en
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  • FR750572A - Fumivorous device for furnaces of boilers or others : en fr
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  • US1921234A - Graduated circle for radio direction finders : en
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  • FR750254A - Wheel cover and its manufacturing process : en fr
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  • US1921910A - Flexible coupling : en
  • US1921965A - Indicating device : en
  • US1921069A - Safety lamp : en
  • US1921894A - Bolster bearing device : en
  • US1921869A - Method of and means for making coils possessing accurate inductance : en
  • US1922013A - Dust collector : en
  • US1922014A - Humidifying apparatus : en
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  • US1921582A - Process of plasticizing and dispersing cellulose acetate : en
  • US1921753A - Fluid operated tool : en
  • US1921136A - Swivel joint : en
  • US1921684A - Low water detector for boilers : en
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  • US1921151A - Mounting plate for outlet boxes : en
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  • FR750269A - Process for filtering molten metals and application device : en fr
  • GB396636A - The manufacture of new isatins and indigoid dyestuffs derived therefrom : en
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  • FR750363A - Pressure and flow control device for all applications : en fr
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  • DE582025C - Device for roasting on the wire rack or on a skewer : de en
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  • US1921486A - Apparatus for producing profile metals : en
  • US1921676A - Detergent composition of matter : en
  • US1921899A - Micrometer caliper attachment : en
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  • GB397112A - Improvements in or relating to a cutting device particularly for removing horny skin in chiropody : en
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  • FR750446A - Hourdi with a special profile in baked clay or cement concrete, for reinforced cement floors : en fr
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  • FR750399A - Advanced contact for electrical devices : en fr
  • FR750435A - Advertising system : en fr
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  • GB396741A - Manufacture of 2-(3-hydroxynaphthyl-2)-4-hydroxy-6:7-benzo-pseudo-aziminobenzenes and azo-dyestuffs therefrom : en
  • DE582324C - Roller bearings : de en
  • US1921394A - Hair curling and waving device : en
  • US1920955A - Device for forming cigarettes : en
  • US1921936A - Masher : en
  • DE582090C - Ball clamp type quick fastening for cantilever arms of support columns : de en
  • US1921023A - Fluid motor : en
  • US1921312A - Thermostat : en
  • US1921288A - Cable reel for electric appliances : en
  • DE582126C - Procedure for registering recordings in X-ray facilities : de en
  • FR750224A - Process for making construction elements, such as concrete pavement coverings, artificial stones and the like : en fr
  • GB396663A - Improvements in and relating to single roll grinding mills : en
  • US1920952A - Line flow fan : en
  • US1921041A - Method of forming radiators : en
  • US1921280A - Combination check and gate valve : en
  • FR750301A - Improvements to arc lamps in ionized gas : en fr
  • FR750418A - Device for making projectors of all kinds non-blinding : en fr
  • GB396578A - A device for supporting two or more rotating shafts : en
  • DE582110C - Cross-bottom valve bag with a cover strip forming the upper valve edge : de en
  • US1921628A - Portable electric hammer : en
  • GB396712A - Improvements in or relating to catalytic and like contact masses containing platinum : en
  • US1921209A - Hook-ended coiled spring : en
  • FR750315A - Hydraulic motor : en fr
  • DE582112C - Incandescent lamp for liquid fuels : de en
  • DE582137C - Hose coupling : de en
  • FR750372A - Improvements to universal type coupling joints : en fr
  • FR750467A - Process for the catalytic preparation of aldehydes : en fr
  • FR750573A - Method and device for reducing heat loss in absorption refrigeration devices : en fr
  • US1921977A - Cover supplying mechanism for multiple can closing machines : en
  • DE581953C - Multiple wire drawing machine with single drive of the drums : de en
  • DE582058C - Belt conveyor system with several belts : de en
  • US1921774A - Automatic safety razor : en
  • US1921431A - Loading system : en
  • US1921875A - Lamp : en
  • CA334778A - Packing case : en fr
  • CA334707A - Railway crossing signal : en fr
  • US1921137A - Composition for treating water used in air conditioning apparatus and the like : en
  • US1921379A - Oil pan assembling means : en
  • US1921887A - Device for guiding implements, particularly the burner of cutting burner or welding machines : en
  • CA334617A - Steam trap : en fr
  • FR750398A - On-site gyrations of motor cars : en fr
  • AT134445B - Circuit arrangement for telegraph systems with voter operation. : de en
  • AU254237A - Improvements in light signals : en
  • US1921241A - Electrically welded high pressure storage tank : en
  • US1921476A - Relaxation oscillator and amplifier system : en
  • FR750257A - Coupling arrangement for control rectifiers : en fr
  • FR750494A - Improvements in guiding or spacing wires in the form of a layer of warps : en fr
  • FR750549A - Improvements in the manufacture and saponification of filaments, yarns, fabrics, etc., in artificial materials : en fr
  • GB396590A - Improvements in and relating to the manufacture of bricks : en
  • FR750548A - Fondant for glass making : en fr
  • GB396561A - Improvements in wearing apparel : en
  • GB396647A - Manufacture of alkali metal salts of adenyl-pyrophosphoric acids : en
  • FR750528A - Pocket folder, for obtaining cross folds : en fr
  • US1921395A - Shunting system : en
  • US1921705A - Process for the production of aluminium silicosulphide : en
  • DK47609C - Device for Cheese Making Apparatus. : da en
  • FR750509A - Device to improve combustion and reduce fuel consumption : en fr
  • FR750579A - Iron rest forming current switch for electric iron : en fr
  • GB396628A - A mixing and distributing cock : en
  • FR750491A - Board game : en fr
  • GB397108A - Improvements in axial thrashing machines or axial thrashing and straw reducing machines : en
  • US1921562A - Spring connection for vehicles : en
  • CA334613A - Glass yarn manufacturing apparatus : en fr
  • CA334758A - Pipe tool : en fr
  • CA334597A - Milling machine : en fr
  • DE550811C - Device for winding up a supply of yarn : de en
  • DE582032C - Photographic camera with tape support, especially for reproduction : de en
  • US1921701A - Drill cutter : en
  • US1921049A - Baffle wall : en
  • US1921823A - Electrical connecter : en
  • US1921608A - Laboratory switchboard system : en
  • CA334650A - Machine for making paper covers for bottles : en fr
  • CA334706A - Liquid level regulator : en fr
  • US1921413A - Lens holder construction and position indicator : en
  • US1921542A - Mine jack : en
  • US1921677A - Paralleling system for alternating current generators : en
  • DE582311C - Process for the production of highly refractory items : de en
  • US1921377A - Electrolytic apparatus : en
  • US1921610A - Dispensing machine : en
  • US1921679A - Elevator control system : en
  • US1921204A - Voltage compensated starting relay for split phase motors : en
  • US1921714A - Grinding machine : en
  • US1921768A - Joint for barrels and the like : en
  • US1921837A - Brake shoe : en
  • US1921950A - Nonfogging photographic packing materials : en
  • DE582119C - Toggle switch : de en
  • GB396717A - Improvements in the manufacture and production of cobalt nitrosocarbonyl : en
  • AT134437B - Floatless carburetor. : de en
  • CA334608A - Angle cutting device for handsaws : en fr
  • AT134468B - Tabulator for typewriters. : de en
  • DK47624C - Automatic Coupling for Railway Wagons and the like. : da en
  • DE582086C - Milk heater : de en
  • FR750388A - Electrical device for checking and recording operating hours : en fr
  • US1920954A - Combination fish scaler and knife : en
  • US1921616A - Racket bow : en
  • FR750380A - Further training in automobile bodies or other vehicles : en fr
  • US1921561A - Cushion support : en
  • US1921735A - Hot water generator : en
  • US1921051A - Access panel latch : en
  • US1921370A - Method of making phosphorus oxychloride : en
  • US1921489A - Cutting table : en
  • CA334663A - Hair waving device : en fr
  • CA334703A - Soap : en fr
  • CA334713A - True horizon determining apparatus : en fr
  • US1921247A - Milk can and method of making same : en
  • DE582004C - Adjustment device for railway brakes : de en
  • DE582175C - Electric melting furnace with resistance heating for metals and other electrically conductive materials : de en
  • AU761032A - Improvements in furnaces : en
  • CA334639A - Decorative table device : en fr
  • DE582297C - Connection of a musical instrument with a microphone to convert mechanical into electrical vibrations : de en
  • US1921473A - Manufacture of pneumatic tire casings : en
  • DE582017C - Braking device for the wire supply roll on coil winding machines : de en
  • US1921348A - Dish : en
  • US1921559A - Film spool for roll-holding cameras : en
  • CA334764A - Shoe and shank piece : en fr
  • US1921190A - Underslung potato digger for tractors : en
  • US1921194A - Railway spike : en
  • US1921283A - Traveling cultivator : en
  • US1921644A - Car door construction : en
  • AT134495B - Spring clip for leaf spring hammers. : de en
  • DE582255C - Shaft bearing : de en
  • US1921475A - Wheel construction : en
  • US1921690A - Cabinet-safe : en
  • US1921224A - Seat construction : en
  • US1921028A - Brake rod support : en
  • US1921416A - Alloy : en
  • US1921601A - Window glass guide : en
  • GB396743A - Improvements in and relating to the electrolytic treatment of aluminium and its alloys : en
  • US1921216A - Roller bit : en
  • AT134446B - Device for connecting a mouthpiece pivotable by means of a spherical head to a fixed outlet pipe. : de en
  • CA334747A - Electrically heated apparatus : en fr
  • CA334626A - Floor waxer and polisher : en fr
  • DE582092C - Epicyclic gears, especially for motor vehicles, with a plurality of groups of gears arranged one behind the other : de en
  • US1921516A - Method of making tubes : en
  • CA334701A - Coloured stencil : en fr
  • DE582040C - Switching device for electrically operated wire reels : de en
  • FR750515A - Removable cookie cutter for cutting plastics : en fr
  • GB396501A - Improvements in or relating to lighting effects in association with a musical instrument : en
  • CA334686A - Pencil carrier and card grip : en fr
  • FR750280A - Process for preparing pure and stable silver permanganate : en fr
  • DE582272C - Process for the automatic control of the transmission rate of four-wire circuits : de en
  • GB396519A - Improvements in or relating to vapourizing apparatus for sterilizing and like purposes : en
  • US1921979A - Scale : en
  • US1921456A - Sheet rubber product : en
  • US1921526A - Coupling system : en
  • CA334740A - Convertible band pass amplifier coupling : en fr
  • CA334766A - Fastener inserting machine : en fr
  • CA334606A - Toilet soap : en fr
  • CA334741A - Window : en fr
  • CA334762A - Reel : en fr
  • GB396716A - Improvements in or relating to ships' propellers : en
  • FR750358A - Reagent paper for glucose : en fr
  • GB396461A - Improvements in and relating to road signs and indicators : en
  • GB396621A - Improvements in and relating to drying apparatus more particularly for plates of fibrous material : en
  • DE582172C - Process for cleaning heavy petroleum fractions : de en
  • DE582134C - Total counter for measuring devices : de en
  • DE582328C - The use of the process of patent 487,110 for the manufacture of refractory furnace linings and the like. like : de en
  • CA334718A - Rock drill valve : en fr
  • CA334684A - Refrigerator control mechanism : en fr
  • GB396715A - Improvements in or relating to correcting devices for soundlocating appliances : en
  • DE582227C - Workpiece guidance when machining the cutting edge (in particular by grinding) a steel band that produces razor blades : de en
  • DK47623C - Method for the manufacture of bent wood with normal or approximately normal wood properties or for the manufacture of articles of this material. : da en
  • US1921193A - Rolling door mechanism : en
  • US1921847A - Synchronous motor clock : en
  • DE582154C - Steel frame with infill for frame structures : de en
  • FR750279A - Radiological device intended more particularly for the execution of radiographic images with short exposure times : en fr
  • DE578910C - Grinding and polishing of spherical and aspherical lenses or the like. : de en
  • DE582209C - String galvanometer, especially for oscillographic curve recording : de en
  • GB396600A - Improvements in conveyors : en
  • GB396607A - Improved method of and machine for making cigar fillers : en
  • US1921481A - Process for recovering potash salts from liquors containing borax : en
  • US1921657A - Fish lure : en
  • FR750588A - Improvements to measuring caps : en fr
  • GB396511A - Improvements in or relating to roller bearings : en
  • GB396706A - Improvements in or relating to lubricators : en
  • US1921332A - Zigzag folding map : en
  • US1921602A - Process for heating oil : en
  • CA334705A - Disinfectant production : en fr
  • US1921367A - Process of carburizing iron or steel : en
  • US1921482A - Automatic train pipe connecter : en
  • US1921619A - Vacuum tube : en
  • CA334593A - Brake and throttle mechanism : en fr
  • USD90452S - Design fob a mirrored glass bow pin : en
  • US1921278A - Radiator : en
  • US1921728A - Electrical compensating arrangement : en
  • USD90437S - Design for a textile fabric or : en
  • GB396468A - An adjustable aeriform fluid diffuser : en
  • FR750409A - Electric lighted portable candle : en fr
  • FR750343A - Improvements in vacuum cleaners for chimneys and others : en fr
  • US1921228A - Spacer for piling pipe : en
  • US1921047A - Incinerator firing element : en
  • US1921738A - Food fat and oil coloring material : en
  • DE581884C - Circuit arrangement for telephone systems : de en
  • FR750308A - Refrigerated cabinet : en fr
  • GB396509A - Improvements relating to sheet metal cans and like containers : en
  • US1921477A - Production of valuable hydrocarbons : en
  • US1920981A - Conveyer : en
  • US1921944A - Renewable wax cartridge for wax applicators : en
  • DE582023C - Ribbon or wire stretch spring : de en
  • US1921399A - Exhausting mechanism : en
  • US1921620A - Glow tube apparatus : en
  • US1921681A - Die-casting method : en
  • US1921782A - Rotary internal combustion motor : en
  • US1921310A - Rear view mirror for trucks : en
  • FR750381A - cookware rack : en fr
  • FR750312A - Advanced sole and its applications : en fr
  • US1921326A - Process of modifying vinyl resins : en
  • FR750397A - Mixed hydraulic and mechanical hub puller : en fr
  • US1921211A - Sandpaper holder device : en
  • US1921770A - Motor starting system : en
  • DE582009C - Switching device with several switching points in series : de en
  • DE582337C - Steam water drain with a damming body and a valve upstream of this damming body : de en
  • US1921316A - Expanding mandrel : en
  • US1921740A - Apparatus for controlling industrial processes : en
  • US1921968A - Delivery system : en
  • US1921583A - Ladder construction : en
  • DE581979C - Power brake device, in particular for motor vehicles : de en
  • GB397130A - Improvements in or relating to coin-operated machines : en
  • US1920958A - Turnstile : en
  • US1921095A - Apparatus for renovating journal box packing : en
  • US1921775A - Prepayment gasoline pump meter : en
  • FR750404A - Crushing mass for drum mills : en fr
  • FR750407A - Device for the automatic cleaning of precious metal objects : en fr
  • GB396735A - The separation or purification of chlorinated derivatives of phthalic acids : en
  • DE582042C - Process for the azotizing of carbides : de en
  • FR750420A - Piano stool : en fr
  • FR750454A - Variable pitch propeller improvements : en fr
  • FR750521A - Process for the preparation of acetylene from gases containing hydrocarbons : en fr
  • FR750562A - Folding and portable tripod panel, with interchangeable indications, for road works and other signs : en fr
  • GB396749A - Improvements in jelly preparations and method or preparing jellies : en
  • FR750226A - Automatic ignition cut-out for motor vehicle engines : en fr
  • US1921340A - Guiding device for sheet working printing presses : en
  • GB396513A - Improvements in or relating to the binding of books or the like : en
  • US1921487A - Method of and apparatus for feeding webs or strips : en
  • US1921596A - Landing net : en
  • GB396738A - Improvements in or relating to electromagnetic switching devices for use in telephone or like systems : en
  • FR750333A - Rigid anti-hernia breastplate : en fr
  • FR750340A - Electric discharge devices : en fr
  • FR750580A - Articulation system for folding tables and similar objects : en fr
  • FR750466A - Improvements in working with aluminum-based alloys : en fr
  • FR750276A - Improvements to vehicle wheels : en fr
  • FR750287A - air channeling drainer for refrigeration equipment : en fr
  • GB396581A - Improvements in the preparation of hormones : en
  • FR750362A - Apparatus for measuring the true course of a vehicle and in particular of an airplane : en fr
  • GB397107A - Improvements in and relating to electric discharge devices : en
  • GB396766A - Improvements relating to prepayment meters : en
  • FR750432A - New interlocking reinforced cement tile-slab system : en fr
  • FR750599A - Electric curling iron heater : en fr
  • DE582129C - Inhalation device : de en
  • GB396573A - Improvements in or relating to constructions erected with the aid of metallic elements : en
  • FR750565A - Improvements to indirectly heated cathodes : en fr
  • US1921750A - Centrifugal separator for straining pulpy material, such as wood pulp, cellulose, paper pulp, and the like : en
  • US1921808A - Method of making closures : en
  • US1921906A - Exhaust turbo-charged, double-act-ing internal combustion engine : en
  • DE582308C - Safety device for siphon plug : de en
  • FR750535A - Double-branch pin or dowel : en fr
  • GB396710A - Improvements in or relating to machines for operating upon soles of shoes : en
  • DE582095C - Light buoy : de en
  • GB396458A - A photographic slide or holder for flexible light sensitised surfaces : en
  • GB396679A - Improvements in cash registers or the like : en
  • DE582339C - Sealing for openings in cold rooms by a sliding cover plate : de en
  • DE554850C - Process and device for the production of double-warp woven double warp pile fabrics : de en
  • GB396779A - Treating dry fire extinguishing powder to prevent caking : en
  • DE582152C - Step relay, the core of which is provided with a main and an auxiliary pole, especially for telephone purposes : de en
  • FR750229A - Ice cream bite : en fr
  • CA334685A - Refrigerator equalizer valve : en fr
  • US1921244A - Bottle filling machine : en
  • US1921820A - Reducing zinciferous material : en
  • GB396450A - Improvements in or relating to teat cups for milking machines : en
  • FR750412A - Lighting fixtures improvements : en fr
  • DE582302C - Folding top for cars, especially convertibles : de en
  • DE582321C - Autonomous route block : de en
  • GB396789A - Improvements in direction indicators and/or signalling devices for motor and like road vehicles : en
  • GB396534A - Improvements in or relating to lighting devices for gas cookers : en
  • US1921826A - Method of assembling suspenders and slides : en
  • DE582342C - Headlights consisting of two separate, mutually movable coaxial reflectors : de en
  • US1921718A - Electrical transmission system : en
  • US1921796A - Cable code signaling system : en
  • DE582021C - Device for sucking up ash : de en
  • US1920953A - Stain resisting wrought article : en
  • DE582277C - Process for the preparation of water-insoluble monoazo dyes : de en
  • DE581957C - Continuous absorption chiller : de en
  • GB396658A - Manufacture of 3-methylal-3-oxymethyl-n-pentane : en
  • GB396718A - Improvements in and apparatus for the manufacture and production of water gas : en
  • US1921131A - Vehicle wheel : en
  • US1921922A - Oil burner : en
  • US1921934A - Art of annealing : en
  • US1921198A - Twisting tool : en
  • US1921712A - Road maintenance machine : en
  • US1921897A - topham : en
  • FR750225A - Process for obtaining vibrated cement piles : en fr
  • GB396510A - Improvements in or relating to lens carriers : en
  • FR750286A - Apparatus for measuring various dimensions of wheels for automobile trucks : en fr
  • DE582162C - Process for the production of iron reinforcements for concrete shoes for line poles : de en
  • US1921130A - Manufacture of rubber articles : en
  • US1921252A - Means for attaching alpha sponge rubber pad to alpha backing member : en
  • US1921600A - Spring winder : en
  • US1921645A - Supplemental table top : en
  • US1921866A - Keying structure for motion picture projection machines : en
  • DE582316C - Pneumatic tube system : de en
  • FR750564A - Training in baby carriages or the like : en fr
  • FR750266A - Platen press, in which the sheets are fed and deposited automatically : en fr
  • US1921586A - Manufacture of dyes containing chromium : en
  • US1921785A - Dirigible light : en
  • US1921967A - Burglar trap : en
  • GB396767A - Improvements relating to the removal of ash from furnaces : en
  • US1921615A - Combined fire and police alarm system : en
  • US1921981A - Bolt anchor : en
  • CA334643A - Valve locking mechanism : en fr
  • CA334780A - Cellulose derivative composition : en fr
  • DE582128C - Glue extenders : de en
  • US1921086A - Electric condenser : en
  • US1921578A - Refrigerator car door : en
  • AT134402B - Sewing machine. : de en
  • AU802032A - An improved clothes peg for hanging clothes and like articles : en
  • US1920991A - Artificial lure : en
  • US1921598A - Power transmission mechanism : en
  • CA334719A - Therapeutic heating device : en fr
  • CA334722A - Petroleum bottom dividing method : en fr
  • US1921269A - Paper box machine : en
  • AT134472B - Expansion switch. : de en
  • CA334628A - Wolf snare : en fr
  • DE582054C - Device for the automatic opening and closing of sliding doors : de en
  • DE582107C - Device for spinning and post-treating artificial silk : de en
  • AU1012832A - Improvements in piston skirt expander : en
  • CA334751A - Automobile lift safety device : en fr
  • CA334658A - Wheel rim : en fr
  • US1921436A - Poise attachment : en
  • US1921835A - Optical printer : en
  • AT134466B - Electrically heated hob. : de en
  • AU976832A - Improvements in and connected with liquid dispensing apparatus : en
  • US1921520A - Hedge trimmer : en
  • US1921862A - Automatic sorter : en
  • US1920956A - Power transmission mechanism : en
  • US1921251A - Portable refreshment booth : en
  • US1921439A - Vacuum cleaner handle structure : en
  • US1921460A - Garden chair : en
  • US1921496A - Production of benzanthrone derivatives : en
  • AU892832A - Improvements in propellers : en
  • US1921149A - Hostital indicator : en
  • US1921337A - Copper-containing azodyestuff : en
  • CA334621A - Card index : en fr
  • CA334646A - Metal bar and rib making apparatus : en fr
  • CA334757A - Building material : en fr
  • US1921365A - Pressure regulator : en
  • US1921555A - Sealing ring : en
  • DE582206C - Circuit arrangement for relay selectors : de en
  • FR750330A - Temperature regulator in ovens or other heated enclosures : en fr
  • AT134458B - Buckle with toggle spring for braces or the like. : de en
  • DE582205C - Circuit arrangement for telephone extension systems : de en
  • DE582131C - Chainsaw powered by a gasoline engine : de en
  • DE582146C - A centrifugal machine consisting of several nested, conical screen drums : de en
  • DE582221C - Apparatus for the separation of material according to the specific weight : de en
  • US1921242A - Scarf for electric arc welding thick metal articles : en
  • US1921827A - Water faucet : en
  • FR750383A - Electrical method and device for purifying fluids, in particular air : en fr
  • FR750489A - Improvements in the fuel supply of mechanical or similar grates and related apparatus : en fr
  • DE579976C - Spring-loaded push button switch for electric flashlights : de en
  • FR750421A - Movable fuse element safety circuit breaker : en fr
  • GB396778A - Process for the manufacture of 3.4.5.-trisubstituted-triazoles (1.2.4) : en
  • DK47619C - Dust container for vacuum cleaners. : da en
  • CA334631A - Window guide channel : en fr
  • FR750393A - Process and apparatus for the distillation of rubber : en fr
  • US1921295A - Incandescent lamp guard : en
  • FR750263A - Flexible elastic disc coupling : en fr
  • US1921889A - Newspaper : en
  • AT134414B - Pan roof chisel. : de en
  • AT134405B - Device for recording sounds. : de en
  • AT134477B - Circuit arrangement for high-frequency induction furnaces with grid-controlled gas or vapor discharge vessels used to generate alternating current. : de en
  • AT134416B - Microscope. : de en
  • DE582279C - Drive device for grate feeder with oscillating throwing shovel : de en
  • DE582165C - Rotary piston engine or pump in which two pistons rotate at different angular speeds : de en
  • FR750497A - Elastic bearing for pivot, especially for watch axles and other precision instruments : en fr
  • US1921104A - Gas or oil heating device : en
  • US1921599A - Brake mechanism : en
  • US1921013A - Paspartouting machine for lamp shades, baskets, and the like : en
  • US1921030A - Generator cooling device : en
  • US1921556A - Lubricating device for bearings : en
  • FR750273A - Casing for electric machines with jacket cooling : en fr
  • US1921390A - Glassware conveyer : en
  • US1921185A - Method and means for surfacing roads : en
  • US1921463A - Serving tray : en
  • CA334689A - Pasteurizer : en fr
  • CA334669A - Railway car coupler : en fr
  • US1921238A - Machine for hulling nuts and the like : en
  • US1921301A - Ironing machine : en
  • US1921458A - Manufacture of basic derivatives of anthraquinone : en
  • US1921760A - Alloy : en
  • GB396768A - Improvements relating to change speed gears : en
  • FR750534A - Pipe joint : en fr
  • GB396627A - Improvements in time and time-distance recording apparatus for vehicles : en
  • US1921443A - Bearing for rotary printing machines : en
  • FR750251A - Process for the distillation of volatilizable metals, for example zinc : en fr
  • FR750417A - Means of advertising and method of disseminating it : en fr
  • DE582075C - Atomized burner for liquid or powder fuel : de en
  • DE582274C - Drive device for step switch : de en
  • GB396449A - Improvements in portable lamps : en
  • US1921825A - Process for the recovery of metal values : en
  • FR750297A - Airtight salt shaker with automatic valve : en fr
  • GB396648A - Improvements in or relating to apparatus for washing and otherwise treating gases with liquids : en
  • FR750260A - Improvements to electric accumulator elements : en fr
  • GB396486A - Improvements in or relating to folding mechanisms for paper or similar sheets : en
  • CA334616A - Hose connection : en fr
  • US1920957A - Crayon sharpener : en
  • US1921851A - Hose supporter : en
  • US1921853A - Preparation of sound records for reproduction in combination with moving pictures : en
  • US1921447A - Accessories for electric fittings : en
  • AT134415B - Prismatic riflescope with a fixed agreement. : de en
  • FR750526A - Corrosion resistant metal or alloy cover for roofs, walls and other surfaces : en fr
  • GB396646A - Photographic filter layers or anti-halation layers : en
  • FR750429A - Typewriter Improvements : en fr
  • GB396506A - Instrument for the measurement of the velocity of low speed air currents : en
  • US1920996A - Automatic starting mechanism for internal combustion engines : en
  • US1921080A - Deinking apparatus : en
  • AU847532A - Improved method of recovering gold from colloidal slum andother colloidal materials : en
  • US1921763A - Draft control apparatus for furnaces : en
  • US1921153A - Motor driven blower unit : en
  • US1921352A - Brooder house : en
  • US1921419A - Electric switch : en
  • DE582085C - Pyrophoric lighter : de en
  • US1921811A - Cork remover : en
  • FR750364A - Automatic adjustment device for transmissions of forces of any kind, and in particular for brakes : en fr
  • FR750461A - Fresh water carafe : en fr
  • US1921281A - Adjustable locking tubing tong : en
  • US1921748A - Percolator coffeepot : en
  • US1921200A - Continuous object forming press : en
  • US1921543A - Electrical radiation apparatus : en
  • US1921203A - Combing machine : en
  • US1921344A - Engine starter : en
  • CA334771A - Heel seat forming machine : en fr
  • US1921207A - Automatic train pipe connecter : en
  • US1922018A - Carbureted water gas method : en
  • AU856032A - Improvements in storage batteries ofthe iodine type : en
  • FR750274A - Packaging for fruits, flowers and early vegetables : en fr
  • FR750440A - Process for the preparation of dried milk : en fr
  • FR750233A - Lifting and restraint device for free-falling sheep : en fr
  • GB396795A - Improvements in or relating to shoe supporting forms : en
  • US1921006A - Electric cut-out : en
  • US1921721A - Clamp : en
  • US1921937A - Oil burning apparatus : en
  • DE582214C - Device for generating induced draft and underwind in combustion systems : de en
  • CA334696A - Mattress tufting device : en fr
  • GB396559A - Process and apparatus for dividing pressing and moulding plastic sweetmeats : en
  • US1921033A - Suction cleaner : en
  • DE582283C - Wall hook : de en
  • DE582289C - Cassette for tape or wire-shaped recording media : de en
  • US1921196A - Burner control apparatus : en
  • US1921685A - Concrete mixer : en
  • US1921879A - Process for producing dichloroethylene : en
  • FR750203A - Metal spoke wheel for cars, carts, etc. : en fr
  • FR750377A - Further training in ovens for pastry chefs, bakers, cooking and the like : en fr
  • FR750202A - Improvements to the marriage-breakers of referees : en fr
  • FR750516A - Device for supplementing the supply of stamps or other receipts from a dispensing machine : en fr
  • GB396570A - Improvements in or relating to packages for cigarettes and like articles : en
  • GB396659A - Improvements in or relating to dredgers for dredging powder-like or granular materials : en
  • DE582060C - Depositing device for pieces of dough : de en
  • DE582087C - Milk heater : de en
  • DE582286C - Process for the vulcanization of synthetic rubber-like products with little plasticity : de en
  • FR750589A - Lighting device for busy roads : en fr
  • USD90464S - Design for a bottle : en
  • DK47613C - Recoil pistol. : da en
  • US1921554A - Drive release and brake for alpha spindle : en
  • US1921805A - Helicopter : en
  • FR750328A - New water insoluble azo dyes : en fr
  • FR750593A - Improvements to zippers : en fr
  • DE582338C - Device for single or multiple line duplication of originals with printable mirror writing and stretched on a printing drum : de en
  • CA334588A - Well oil recovering apparatus : en fr
  • GB396564A - Improvements in or connected with boxes or receptacles for growing plants and like purposes : en
  • GB396774A - Improvements in or relating to the manufacture of derivatives of unsaturated fatty alcohols : en
  • FR750437A - Typist Work Control System : en fr
  • GB396495A - Process of finishing pelts and skins : en
  • GB396739A - Improvements in automatic switches for use in telephone or like systems : en
  • FR750317A - Economical waxing machine for parquet floors or others : en fr
  • FR750275A - Device for attaching objects to containers : en fr
  • CA334592A - Power take off : en fr
  • FR750600A - On-site gyrations of motor cars : en fr
  • US1921132A - Powdered fuel engine and method of operating the same : en
  • FR750211A - Electric generator for lighting and ignition : en fr
  • FR750478A - Arrangement for voltage adjustment by means of controlled discharge vessels : en fr
  • FR750530A - Method of construction of dam walls and elements for its execution : en fr
  • FR750300A - Improvements in the manufacture of circuit breakers : en fr
  • FR750508A - Knapsack : en fr
  • USD90456S - Design for a curtain or the like : en
  • FR750473A - Improvements in the conservation of oxidizable organic materials such as rubber : en fr
  • US1921546A - Treating process : en
  • US1921964A - Motion picture and sound record film : en
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  • US1921924A - Loud speaker motor : en
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  • US1921852A - Light controlling method and means : en
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  • US1921524A - Method of making insulating blocks : en
  • US1921650A - Picking machine : en
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  • US1921704A - Electric valve circuits : en
  • US1921976A - Automobile ventilator : en
  • US1921433A - Constant temperature apparatus : en
  • CA334609A - Lamp filament connector : en fr
  • US1921321A - Drier and polisher for wood turnings : en
  • US1921148A - Yeing and printing of textile fibers by means of dyes formed by oxidation : en
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  • US1921564A - Process for recovery of iodine and/or bromine from solutions containing same : en
  • US1921349A - Semaphore : en
  • US1921898A - Focusing device for photographic cameras : en
  • US1921118A - Lubricating apparatus : en
  • US1921376A - Apparatus for electrolysis of fused bath : en
  • US1921742A - Announcing apparatus : en
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  • GB396709A - Improvements in or relating to terminating circuits for two-way electrical signalling systems : en
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  • US1921994A - Feed clutch : en
  • US1921113A - Display device : en
  • FR750434A - Protective device against glare from headlights and the sun : en fr
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  • US1921653A - Knuckle-jointed safety motorvehicle bumper : en
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  • FR750281A - Moisture resistant product : en fr
  • FR750460A - Relay mounting modes for incandescent lamp cinema installation : en fr
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  • US1921191A - Adjustable mat for optical instruments : en
  • US1921330A - Acylamino benzene stibonic acids : en
  • US1921435A - Padlock : en
  • US1921778A - Gas lighter construction : en
  • US1921067A - Manufacture of thermionic devices : en
  • FR750563A - Car wheel mounted camping table : en fr
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  • FR750354A - Liquid fuel injector-atomizer device for internal combustion engines : en fr
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  • GB396545A - Improvements in or relating to the production of asphaltic surfacing compositions : en
  • US1921510A - Two-stroke cycle internal combustion engine : en
  • FR750284A - Closure capsule : en fr
  • GB396576A - An improved process for the production of methylated cycloheptanones and cyclo-octanones : en
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  • GB396760A - Improvements in the production of organic amines : en
  • FR750232A - Interior reinforcement without mastic or cement for insulators : en fr
  • FR750253A - Grinding and polishing machine : en fr
  • FR750387A - : fr
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  • US1921931A - Screw propeller : en
  • GB396505A - Improvements relating to chain cases for cycles and the like : en
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  • FR750553A - : fr
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  • US1921659A - Life preserver : en
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  • FR750351A - Explosive device for protection of trenches or other advanced positions : en fr
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  • US1922019A - Flaw detector car : en
  • FR750215A - Manufacturing process for white portland cement : en fr
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  • US1921687A - Inductor : en
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  • US1921920A - Process for obtaining reserves under azo-dyestuffs : en
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  • FR750431A - Improvements to gas stoves or other similar devices : en fr
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  • US1921857A - Color lakes : en
  • US1921933A - Smoking stand : en
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  • US1921606A - Multicore high tension cable : en
  • US1921998A - Method of improving aluminum and alloys thereof : en
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  • US1921646A - Waterproof clothing : en
  • US1921414A - Adapter for apparatus handling receptacles : en
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  • US1921173A - Automatic ejecting mechanism : en
  • US1921478A - Production of valuable liquid hydrocarbons : en
  • US1921627A - Rope brake and lock : en
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  • US1921378A - Production of polymerization products from alkylene oxides : en
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  • US1921695A - Chuck : en
  • US1921858A - Supply circuit for amplifiers : en
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  • US1921544A - Forming apparatus : en
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  • US1921299A - Cyanide and method of controlling the porosity thereof : en
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  • US1922003A - Apparatus for inflating and deflating gas main bags : en
  • US1920972A - Vibrating screen : en
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  • US1921691A - Cushion and its manufacture : en
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  • US1921100A - Method of and apparatus for making building tiles : en
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  • US1921587A - Method for the manufacture of secondary aromatic amines : en
  • US1921807A - Water heater : en
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  • US1921703A - Variable reactance device : en
  • US1921802A - Method of waving hair : en
  • US1921492A - Electrolytic process for simultaneously bleaching and removing metallic impurities from cellulose esters : en
  • US1921669A - Method and apparatus for separating coins : en
  • US1921932A - Chair : en
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  • US1921829A - Refrigerating machine : en
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  • US1921464A - Method and apparatus for the recording and projection of pictures, images, and the like : en
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  • FR750246A - Pregnancy Corset : en fr
  • US1921063A - Treatment of echoes in transmission systems : en
  • US1921267A - Pie plate washing : en
  • US1920971A - Liquid level gauge with diaphragm seal : en
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  • CA334699A - Dyeing apparatus : en fr
  • US1921066A - Cathode for electron discharge devices and method of making the same : en
  • US1921233A - Cable reel transporting vehicle : en
  • US1921986A - Testing apparatus : en
  • US1921011A - Coupler yoke : en
  • US1921341A - Attachment for rock drill tools : en
  • CA334726A - Container bottom adjusting device : en fr
  • US1921795A - Switch : en
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  • US1921171A - Flash light : en
  • US1921309A - Filter material and method of producing the same : en
  • US1921664A - Springboard : en
  • US1921886A - Fertilizer discharging unit : en
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  • US1921157A - Purifying ethylene dibromide : en
  • US1920989A - Portable crane : en
  • US1921119A - Envelope sealing machine : en
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  • USD90438S - Design for an electric water heater : en
  • USD90443S - Design for a combination hall tree : en
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  • US1921982A - Remote control system : en
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  • CA334745A - Olefine alcohol : en fr
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  • US1921806A - Heat exchange apparatus : en
  • US1921895A - Fuel mixing apparatus : en
  • US1921170A - Marble ring holder for outlet boxes : en
  • US1921342A - Egg beater : en
  • US1921257A - Aib conditioning apparatus : en
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  • GB396685A - Improvements in or relating to relieved, axially movable pipe compensators : en
  • US1921682A - Can : en
  • CA334598A - Aluminium alloy : en fr
  • US1921958A - Bearing : en
  • US1921462A - Serving table : en
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  • US1921246A - Process and apparatus for cracking hydrocarbon oil : en
  • US1921405A - Roll shaft : en
  • US1921318A - Refraction instrument : en
  • US1921183A - Process for making veneer and alpha veneer machine : en
  • US1921502A - Puppet head : en
  • US1921926A - Method of treating textiles and composition used in the method : en
  • CA334612A - Pipe hanger : en fr
  • US1921573A - Ebullition initiator : en
  • US1921590A - Fluid power controlling mechanism : en
  • US1921641A - Heel-concaving machine : en
  • US1921039A - Method and apparatus fob making : en
  • DE582147C - Process for extracting and conveying solid soil : de en
  • GB396619A - Improvements in and relating to portable electric grinding machines : en
  • US1921449A - Motion picture projecting machine : en
  • FR750595A - Lockable protective cover for sewing machines and similar machines : en fr
  • US1921901A - Insect destroying device : en
  • US1921495A - Machine fok making bats : en
  • GB396630A - Retarding devices for controlling the operating mechanism of photographic shutters and like gear trains : en
  • US1921545A - Colored screening layer for sensitive photographic elements : en
  • US1921604A - Apparatus for manufacturing medical swabs : en
  • AT134459B - Pocket lighter. : de en
  • CA334679A - Inverse voltage control : en fr
  • US1921285A - Composite slab structure : en
  • US1921817A - Domestic heater : en
  • US1921902A - Thread changing feeder mechanism of circular knitting machines : en
  • US1921940A - Air heater and circulator for hair drying systems : en
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  • US1921231A - Apparatus for cooking : en
  • US1921354A - Combined cigarette case and lighter : en
  • US1921380A - Timing device : en
  • US1921286A - Rope clamp : en
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  • US1921711A - Process of producing water gas : en
  • US1921706A - Process for the production of pure arsenious oxide from arsenical products : en
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  • FR750375A - New products for fuel improvement : en fr
  • US1921070A - Windshield wiper : en
  • US1921680A - Bottle cleaning device : en
  • FR750329A - New Anthraquinone Series Condensate Products : en fr
  • US1921138A - Production of menthene : en
  • CA334623A - Pneumatic cleaner : en fr
  • US1921422A - Weather strip for car doors : en
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  • GB396465A - Improvements in and relating to electric incandescent filament lamps : en
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  • FR750258A - Preparation of chlorosulfonic acid and sulfur dioxide : en fr
  • DE582296C - Switching device on automatic spiral drill milling machines for reversing the workpiece spindle : de en
  • FR750206A - Circulating lubrication device for internal combustion engines : en fr
  • FR750344A - Manufacturing process for wreaths, crosses and other funeral articles : en fr
  • AT134479B - Process for the processing of brown leather waste. : de en
  • US1921052A - Washing device : en
  • US1921954A - Motion picture and sound record film : en
  • US1921991A - Alcoholic fermentation process and product thereof : en
  • AU5489565A - Improvements in or relating to arrangements for detecting electro-magnetic radiation : en
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  • US1921078A - Dyeing : en
  • US1921484A - Window channel : en
  • US1921521A - Shedding device for dobbies : en
  • FR750248A - Improvements to indirectly heated cathodes for electronic lamps : en fr
  • GB397106A - Improvements in or relating to pneumatic hammers and similar percussive tools : en
  • US1921404A - Continuous film processing machine : en
  • AT134449B - Process for improving the mechanical and magnetic properties of iron-nickel-beryllium alloys. : de en
  • US1921595A - Clock : en
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  • US1921531A - Apparatus for and method of producing compressed gas : en
  • US1921498A - Feed water regulator : en
  • US1921766A - Electric switch : en
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  • FR750348A - Process for preparing polymerized vinyl esters : en fr
  • US1921227A - Method of aligning edges for flash welding tubes : en
  • US1921883A - Plain-roller bearing journal box : en
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  • US1920994A - Torque distributor : en
  • US1922015A - Journal box : en
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  • US1920978A - Insulator : en
  • US1921814A - Pin ticket : en
  • US1921187A - Ultra-short-wave system : en
  • US1921874A - Cigarette extinguisher : en
  • DE582211C - Festoon socket with contact protection : de en
  • GB396609A - Improvements in or relating to aircraft landing gear : en
  • AU401526B2 - Improvements in or relating to arrangements for detecting electro-magnetic radiation : en
  • US1921415A - Door operating mechanism : en
  • USD90460S - Design fob a textile fabric ob : en
  • AT134478B - Electric induction furnace. : de en
  • CA334776A - Alarm system : en fr
  • US1921613A - Dental bridge : en
  • USD90445S - Design fob a store front : en
  • US1921120A - Amino alpha-phenoxy naphthalene : en
  • US1921305A - Shield for hot air registers or the like : en
  • US1921672A - Ball mill lining : en
  • US1921696A - Draft gear support : en
  • US1921794A - Expansion shield or anchor : en
  • US1921270A - Pocket sheath for fountain pens : en
  • US1921150A - Corner construction : en
  • US1921726A - Treatment of reactors : en
  • AU862732A - An improved freshair supply heater for chicken brooders orthe like : en
  • US1921438A - Cord take-up structure : en
  • US1921479A - Apparatus for washing sheet glass : en
  • US1921755A - Mirror : en
  • US1921758A - Variable speed drive : en
  • US1921855A - Combination cigarette case and lighter : en
  • US1921074A - Window : en
  • US1920975A - Adjustable latch or closure device : en
  • US1921084A - Sterilization of radon seeds : en
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  • CA334632A - Anti-friction packing : en fr
  • FR750539A - Automatic coupling head for railway vehicles : en fr
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  • USD90453S - Design for a buckle : en
  • FR750428A - Mobile fruit sorting machine : en fr
  • GB396652A - Method for manufacturing articles such as building elements from a mixture of hydraulic binder and a prepared fibrous material : en
  • GB396548A - Improvements in automatic control gear for intermittent operation of reversing electric motors : en
  • AT134447B - Hand grinding and polishing device. : de en
  • US1921800A - Apparatus for marking wire : en
  • DE582281C - Method and device for the production of covered hollow glass bodies : de en
  • GB396708A - Improvements relating to light valves : en
  • CA334673A - Meat sawing apparatus : en fr
  • US1921012A - Photographic film developing apparatus : en
  • GB396566A - Means for the centrifugal casting of iron, steel and metal wares : en
  • US1921391A - Pneumatic tube terminal : en
  • AT134442B - Circuit arrangement for telephone systems with several branch points located on a connecting line. : de en
  • DE582010C - Compressed gas switch with motor drive : de en
  • FR750268A - Device for varying the adhesion of vehicle carriers and propellants : en fr
  • GB396459A - Improvements in kites : en
  • US1921254A - Electric cigar and cigarette lighter : en
  • US1921854A - Combination cigarette case and lighter : en
  • US1921038A - Flatiron stand : en
  • US1921314A - Door closer and check : en
  • FR750231A - Four-stroke thermal engine with different volume for each stroke : en fr
  • US1921214A - Cooling means for motion picture projectors : en
  • US1921787A - Pulsation apparatus : en
  • US1921842A - Centrifugal machine : en
  • US1921296A - Filter : en
  • US1921372A - Match packet and method : en
  • US1921771A - Conveyer device : en
  • FR750204A - Chain derailment gear change device, for bicycles : en fr
  • DE582089C - Device for treating liquids by means of ultraviolet rays : de en
  • GB396792A - Improvements in or relating to the manufacture of artificial filaments and the like : en
  • GB396625A - Improvements in or relating to apparatus for treating roads and other surfaces : en
  • GB396551A - Manufacture of racemic compounds of the 1-hydroxyphenyl-2-aminopropanol (1) series : en
  • GB396589A - Improvements in sliding clasp fasteners : en
  • US1921307A - Golf ball marking apparatus : en
  • AT134453B - Device for the automatic shut-off of gas lines. : de en
  • US1921480A - Tillage implement : en
  • DE582050C - Composite electrical and mechanical system for the transmission of an oscillation frequency band : de en
  • DE582153C - Transportable ultra-short wave arrangement : de en
  • GB396583A - Improvements relating to back-spacing mechanism for type-writing and like machines : en
  • US1921509A - Machine for washing glasses and other receptacles : en
  • GB396475A - Improvements in and relating to systems of electric motor control : en
  • GB396794A - Improvements in internal combustion engines : en
  • CA334641A - Fuel injector : en fr
  • CA334786A - Sea drome : en fr
  • US1921147A - Method of and means for controlling low temperature refrigerants : en
  • GB396549A - Process and apparatus for the manufacture of tubes from sheet metal : en
  • GB396603A - Improved method of and/or means for providing pockets in garments : en
  • GB396719A - Arrangement for the transmission of call and selector impulses over telephone lines : en
  • FR750282A - Automatic brake for horse-drawn car : en fr
  • FR750277A - Winding mechanism and automatic reversal of the winding direction of the inked ribbon of a typewriter : en fr
  • FR750596A - Process for manufacturing a shoe fitting intended more especially for excursions and mountain sports, and shoe fitting manufactured according to the process : en fr
  • IE12597L - Discharge tubes : en
  • GB396500A - Improvements in or relating to paper folding machines : en
  • GB396516A - Improvements in and relating to the production of spot carbon papers : en
  • US1921062A - Bin closure : en
  • US1921164A - Composite laminated panel : en
  • GB396671A - An underlay for typewriters : en
  • GB396673A - Improvements relating to door-closing devices : en
  • GB396480A - Improvements relating to lawn-mowing or grass-cutting machines : en
  • GB396776A - Improvements in or relating to automatic alarm devices : en
  • FR750542A - regulating equipment ensuring the sealing of the electrodes of electric ovens, and its mounting device : en fr
  • CA334755A - Slicing machine : en fr
  • AT134469B - Regulating valve for water softeners. : de en
  • US1920966A - Fishing pole : en
  • US1921126A - Combined automatic and manual circuit controller : en
  • FR750272A - Pleated fabric forming waves and method for obtaining it : en fr
  • US1921848A - Temperature compensating means for weighing scales : en
  • US1921881A - Coupling device for road forms : en
  • FR750311A - Capier machine : en fr
  • GB396540A - Mechanism for controlling a side-slip indicator device for the instruction of aircraft pilots : en
  • GB396711A - Improvements in domestic hot water boilers : en
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  • DE582257C - Method and device for heating pasteurizers, in particular for milk : de en
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  • US1921005A - Electric oil cut-out : en
  • US1921297A - Process of manufacturing activated carbon : en
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  • GB378390A - Improvements in the manufacture and production of urethane derivatives : en
  • FR750347A - Aircraft engine test facility : en fr
  • US1921105A - Fuel feed control for oil burners : en
  • US1921429A - Piston skirt expander : en
  • DE581865C - Process for cooling hot gases, in particular furnace gases : de en
  • FR750242A - Concrete and iron dam and retaining walls : en fr
  • FR750465A - Remote measurement receiving installation, operating according to the pulse method : en fr
  • US1921268A - Dough rolling machine : en
  • US1921699A - Preparing open and closed hollow bodies by centrifugal casting : en
  • US1921772A - Pneumatic tire : en
  • US1922009A - Window and sash construction : en
  • GB396508A - Improvements relating to inking rolls of printing machines : en
  • GB396773A - Improvements in or relating to tea-pots, coffee pots, hot water jugs and the like : en
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  • FR750402A - Submarine training : en fr
  • GB396536A - Improvements in or relating to electromagnetic relays : en
  • FR750506A - Freight elevator device : en fr
  • GB396462A - Improvements relating to furniture : en
  • FR750487A - Film advancement device for cameras : en fr
  • US1921666A - Oil burner : en
  • GB396638A - Improvements in cocks : en
  • US1921692A - Device for illustrating preparation of coal : en
  • DE582078C - Frameless spring insert : de en
  • GB396473A - Improvements in, or relating to, boring, grinding, and the like machines : en
  • FR750303A - Forced circulation steam generator : en fr
  • GB396555A - Improvements in centrifugal governors : en
  • CA334634A - Piston skirt expander : en fr
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  • DE582135C - Bottom trawl gear : de en
  • DE577170C - Process for irradiating viscous or viscous extracts of animal or vegetable origin : de en
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  • US1921406A - Power transmission mechanism : en
  • US1921099A - Machine for shaping uppers over lasts : en
  • US1921917A - Yielding door mechanism : en
  • FR750321A - Rail brake magnet retainer : en fr
  • DE582059C - Pneumatic tube system with a device for limiting the stacking height of the cans at a stacking point : de en
  • DE577823C - Tiltable headlights for vehicles, especially for bicycles and motorcycles : de en
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  • US1921177A - Shoe : en
  • US1921292A - Composition and method of making and using the same : en
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  • FR750558A - : fr
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  • GB396791A - Improvements in or relating to meters for measuring gaseous fluid : en
  • CA334781A - Liquid applying apparatus for textile materials : en fr
  • FR750247A - Improved and cost-effective cap-cover device for case enclosing a fly-trap strip : en fr
  • GB396747A - New or improved disinfecting and cleansing device for telephone and like mouthpieces : en
  • US1921127A - Voltage compensated refrigerator starter : en
  • US1921353A - Cooling bed : en
  • US1921651A - Picking and harvesting machine : en
  • DK47629C - Vare-Bordautomat. : da en
  • US1921110A - Luggage : en
  • US1921888A - Machine for guiding cutting or welding burners, electrodes, and like implements : en
  • US1921939A - Machine for fastening together folded sheets of paper with adhesive material : en
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  • US1921004A - Gaseous discharge device : en
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  • DE582148C - Process for the preparation of salts of salicylic acid : de en
  • FR750227A - Product for plant protection : en fr
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  • FR750401A - Saw tooth crushing device : en fr
  • GB396639A - Improvements relating to the admission of air to the induction pipes of internal-combustion engines : en
  • US1921111A - Dynamo electric machine stator with noncorrosive lining : en
  • US1921427A - Magneto : en
  • US1921445A - Conveyer roll : en
  • DE582116C - Signaling device for passenger vehicles : de en
  • DK47617C - Automatic Ignition Offset Device in Controlled Metal Vapor Valves for Converting DC to AC. : da en
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  • CA334611A - Pulverized fuel stoker : en fr
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  • US1921592A - Pawl conveyer for continuous heating furnaces : en
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  • FR750394A - Remote rail car braking system for rail yards and other applications : en fr
  • GB396752A - Means for mounting incandescent electric lamps and reflectors for same : en
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  • GB396542A - Improvements in and relating to vacuum cleaning machines : en
  • AT134484B - Straw cutting machine. : de en
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  • US1921798A - Furnace for liquid fuel burners : en
  • US1921974A - Security device for battery ignition circuits : en
  • US1921984A - Combined sunshade and headrest : en
  • US1921146A - Brake-operating connection : en
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  • FR750325A - Improvements to ship portholes : en fr
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  • FR750415A - Direct reading capacitance meter : en fr
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  • DE582278C - Process for the preparation of disazo dyes : de en
  • DE582320C - Process for the preparation of easily soluble salts of phenylquinoline carboxylic acids : de en
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  • US1921708A - Combined house heating and domestic water heating system : en
  • US1921797A - Bridle ring : en
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  • US1921949A - Treatment of cellulose esters : en
  • US1921260A - Windshield operating mechanism : en
  • US1921791A - Means for adjusting the plungers of measuring instruments : en
  • US1920964A - Electrodeposition of alloys : en
  • US1921156A - Lost-motion connection for brake mechanisms : en
  • US1921625A - Tape dispensing machine : en
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  • US1921522A - Well bore feeler : en
  • US1921985A - Internal combustion engine : en
  • US1921072A - Telephone pay station apparatus : en
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  • FR750591A - : fr
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  • FR750543A - Airplane powertrain : en fr
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  • US1921935A - Process for the conversion of textile vegetable fibers into threads having the texture of wool : en
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  • US1921911A - Can opener : en
  • US1921673A - Scoring device for contract bridge : en
  • US1921719A - Electrical apparatus : en
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  • CA334731A - Meter recording device : en fr
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  • US1920965A - Blowpipe : en
  • US1921188A - Sheet metal die : en
  • US1921426A - Method of treating artificial silk : en
  • FR750379A - Fuel distributor for internal combustion engines : en fr
  • AT134487B - Process for applying radioactive substances to all kinds of carriers. : de en
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  • US1921568A - Doorstop : en
  • US1921434A - Spare wheel lock : en
  • US1921236A - Method and apparatus for constructing alpha concrete caisson : en
  • US1921364A - Media for protecting furs, hairs, feathers, and animal textile products against the attack of animal and plant pests : en
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  • US1921494A - Method of producing audible pictures : en
  • US1921757A - Laminated molded product : en
  • US1921891A - Horseshoe : en
  • US1921904A - Decorticating device for timber : en
  • US1921716A - Rail anchor : en
  • US1921749A - Driving mechanism : en
  • AT134421B - Process for making centreless electric incandescent lamps. : de en
  • AU854832A - Improvements in or relating tothe manufacture of sodium aluminate : en
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  • CA334688A - Cementing material : en fr
  • CA334752A - Lubricating oil colour stabilization : en fr
  • DE582019C - Process for the carburization of generator gases : de en
  • DK47612C - Procedure for Treating Raw Phosphate with Nitric Acid. : da en
  • US1921834A - Photo-electric tube : en
  • AT134419B - Electron tube with hot cathode. : de en
  • CA334692A - Nut and washer assembling apparatus for valve stems : en fr
  • CA334759A - Tobacco stemming machine : en fr
  • US1921213A - Bookmarker and filing card : en
  • CA334596A - Engine starting handle : en fr
  • US1921258A - nordmann : en
  • US1921343A - Therapeutic appliance : en
  • FR750332A - Manufacturing process of cement tiles imitating marble : en fr
  • FR750510A - Electric push button switch : en fr
  • CA334594A - Liquid heating and transferring apparatus : en fr
  • AT134470B - Hair curling device. : de en
  • CA334734A - Air conditioning system : en fr
  • CA334642A - Metallic core coating machine : en fr
  • US1921325A - Sleeping compartment for automobiles : en
  • US1921686A - Ball grinding machine : en
  • CA334708A - Railway traffic recorder : en fr
  • US1921277A - Shoe stitcher : en
  • CA334604A - Accordion : en fr
  • CA334665A - Pressure valve : en fr
  • DE582008C - Concentric connector for the low-voltage lines of a tent lighting system : de en
  • US1921245A - Tire rim for pneumatic tires : en
  • US1921308A - Rumble seat top : en
  • US1921784A - sklarek : en
  • US1921022A - Submarine cable signaling system : en
  • US1921223A - Method of differentially truing wire wheels : en
  • US1921729A - Hot top : en
  • US1922017A - Elastic fluid turbine : en
  • USD90451S - Design fob a cigarette carton : en
  • US1921737A - Universal coupling for machine elements : en
  • US1921034A - Syringe container and ejector : en
  • US1921366A - Liquid seal device for regulators : en
  • US1921754A - Die head : en
  • US1921946A - Folding box : en
  • US1921293A - Product and process of reacting cashew nut shell liquid with paraformaldehyde : en
  • AU957932A - Goffering machine and heating apparatus therefor : en
  • CA334737A - Selective channelling system : en fr
  • CA334712A - Tire bead flipper machine : en fr
  • CA334702A - Sealed package for elastic webbing : en fr
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  • FR750492A - Method and device for projecting centrally, substantially without parallax, the image of a three-dimensional measuring index, in the image plane of a telescope : en fr
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  • US1921359A - Traffic signal : en
  • US1921756A - Improvements in and relating to the manufacture of synthetic resins : en
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  • FR750557A - Improvements to carburettors for combustion engines : en fr
  • US1921550A - Tire pressure indicator : en
  • DE582027C - Liquid level indicator for storage basins : de en
  • US1921642A - Pipe joint and method of forming same : en
  • DE582143C - Horse gas protective mask : de en
  • DE580792C - Device to prevent exceeding the permissible brush wear on collectors : de en
  • DE582317C - Process for the production of ammonium nitrate : de en
  • US1921893A - Propelling device : en
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  • FR750574A - Process for the manufacture of lacquers and lacquering raw materials for lacquer fillers which contain artificial resins, in particular artificial phenolic formaldehyde resins : en fr
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  • FR750290A - Mosaic electrode refinements : en fr
  • FR750439A - Method for examining phenomena occurring in gases and vapors : en fr
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  • GB396463A - Improvements in four-stroke-cycle internal combustion engines : en
  • US1921919A - Orbital lathe : en
  • US1921107A - Suspended arch for furnaces and tile therefor : en
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  • FR750384A - Process for the hardening of certain floors or basements : en fr
  • US1921923A - Spray gun : en
  • US1921087A - Wave signaling system : en
  • DE582033C - Photographic lens shutter with light meter : de en
  • GB396523A - Improvements relating to tee squares for use on blackboars, drawing-boards and the like : en
  • FR750270A - Improvements to amplifier lamps : en fr
  • US1920968A - Electric control for motion picture projectors : en
  • FR750551A - Process for the deesterification of filaments, yarns, fabrics and the like based on cellulose esters : en fr
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  • DE582096C - Machine gun replica for practice purposes with aiming device for machine guns : de en
  • DE582133C - On and off switch : de en
  • DE582192C - Cross socket wrench : de en
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  • FR750569A - Improvements made to manometric devices, in particular those for medical uses : en fr
  • US1921614A - Illuminated artificial plant : en
  • FR750235A - Signaling device for public works sites : en fr
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  • US1921468A - Muffler : en
  • US1922010A - Window construction : en
  • DE581915C - Injection carburetor : de en
  • FR750288A - Improvements to automatic alarm devices : en fr
  • DE581793C - Process for the preparation of anthraquinone naphthacridone derivatives : de en
  • FR750236A - Advanced lifting or pulling device : en fr
  • US1921210A - Offsetting press : en
  • CA334599A - Manufacture of sheet rubber : en fr
  • FR750396A - Improvement in towers : en fr
  • US1921162A - Electrical wiring appliance : en
  • US1921752A - Mirror-equipped structure : en
  • US1921621A - Apparatus for classifying spherical articles : en
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  • FR750532A - Manufacturing process of metal bands for the film industry : en fr
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  • US1921900A - One-unit ventilating system : en
  • US1921970A - Combined insole and shank : en
  • AU586832A - Improvements in or relating to dish and the like washing machines : en
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  • US1921392A - Plug fuse : en
  • US1921745A - Wire terminal : en
  • US1921810A - Boiler plug expander : en
  • US1921993A - Apparatus for low temperature carbonization : en
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  • FR750554A - Treatment of extinguishing powders : en fr
  • GB396466A - Improvements in and relating to bung closures for metal vessels : en
  • FR750322A - Die for wrapping machines : en fr
  • FR750538A - Process for producing water practically free from salts, acids and gases : en fr
  • FR750352A - Device for chain tensioning in looms : en fr
  • FR750390A - : fr
  • US1921832A - Watch or clock movement : en
  • FR750337A - Process of using pitch, tar, acid resin and other combustible materials : en fr
  • FR750486A - Hot water distribution installation for several consumers, indirectly measuring the amount of heat consumed : en fr
  • FR750537A - Flexible slide to accommodate and guide windows and in particular automobile windows : en fr
  • GB396812A - Improvements in and relating to fabric measuring machines : en
  • US1921626A - Strip feeding or dispensing machine : en
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  • US1921064A - Hand mechanical fleece deburring machine : en
  • FR750474A - Improvements relating to the conservation of oxidizable organic materials such as rubber : en fr
  • IE13096L - Electrical heating : en
  • DE582158C - Box feeder : de en
  • DE582178C - Teaching how to fix the parts of a framework structure before welding : de en
  • FR750370A - Manufacturing process of ceramic products : en fr
  • US1921551A - Valve mechanism : en
  • AT134435B - Handle. : de en
  • CA334720A - Pedal pad : en fr
  • DE569502C - Bunker arrangement with operating bunker and storage bunker : de en
  • DE582180C - Device for driving linear phonetic carriers : de en
  • FR750335A - Vessel opening device, controlled by rotating rods and provided with a locking system : en fr
  • DE582168C - Process for the production of joints in oil-filled cables : de en
  • DE582200C - Process for the complete separation of book blocks stapled together with spine material in book thread stitching machines and machine : de en
  • US1921363A - Process for treating fibers : en
  • US1921397A - Molding apparatus : en
  • GB396496A - Improvements in electrically driven mills for grinding coffee and the like : en
  • GB396620A - Improvements in grip fastenings for suspenders for hose : en
  • FR750433A - Mixed ice and roller skates : en fr
  • DE582265C - Combustible charcoal lighter : de en
  • DE582138C - Stuffing box for shafts exposed to axial thrust, the part of which is conical in shape, which runs around the packing : de en
  • US1921942A - Metallic propeller : en
  • GB396626A - Improvements in or relating to dial switches for use in telephone systems : en
  • CA334710A - Impedance bond for track circuits : en fr
  • US1921972A - Contact glass : en
  • US1921609A - Compressor governor : en
  • AT134426B - De-shine and renewing device for clothing fabrics u. like : de en
  • CA334783A - Demountable wheel : en fr
  • US1921215A - Motion picture projector : en
  • US1921503A - Drilling apparatus : en
  • US1921010A - Art of coloring mineral matter : en
  • US1921180A - Process for the purification of copper : en
  • US1921629A - Header structure and fastening arrangement therefor : en
  • CA334600A - Buoyant aeroplane : en fr
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  • US1921804A - Car roof : en
  • US1921329A - Reversible tooth sprocket wheel and method of making same : en
  • US1921368A - Process of coating paper : en
  • US1921519A - Windshield : en
  • US1921831A - Cutter valve for release of fluids : en
  • US1921665A - Spring shackle : en
  • US1921707A - Stop motion for knitting machines : en
  • US1921567A - Differential pressure device : en
  • US1921315A - Clutch : en
  • US1921792A - Sanitary smoking stem for pipes, cigars, and the like : en
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  • CA334671A - Aerial device : en fr
  • FR750577A - Dressing and undressing hood : en fr
  • US1921861A - Hair waver : en
  • FR750378A - Double movement winch : en fr
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  • US1921453A - Printing mechanism for accounting machines : en
  • US1921739A - Apparatus for extinguishing burning oil wells : en
  • FR750438A - Group of auxiliary machines for turbine installations : en fr
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  • DE582144C - Plant for the production of preferably smaller molded bodies : de en
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  • US1921928A - Method of making finned tubing : en
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  • US1921205A - Belt conveyer : en
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  • GB397138A - Improvements in the manufacture of yarns : en
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  • US1921446A - Automatic charging means for centrifugal extractors : en
  • US1921801A - Collapsible table, stand, box, or the like : en
  • US1921830A - Protective ground connection : en
  • GB396550A - Improvements in or relating to variable pitch propellers : en
  • DE582213C - Safety device for electric light tubes operated on transformers : de en
  • FR750445A - Rational steel joist profile for reinforced cement floors, lintels, beams or others : en fr
  • GB396611A - Device for checking rearward movements of the arms in boxing tuition : en
  • US1921572A - Arc welding machine : en
  • GB396574A - An improvement in inking rollers for printing machines : en
  • DE582252C - Gas-filled photoelectric cell with a positively biased grid : de en
  • CA334607A - Chimney cleaner : en fr
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  • DE582326C - Hinge with insertable pin for rebated doors and windows : de en
  • GB396703A - Improvements in or relating to variable electric condensers : en
  • FR750209A - Method and apparatus for determining the distribution of pressure exerted by car bodies on their support members : en fr
  • FR750250A - Mechanical lifting device permanently attached to any motor vehicle : en fr
  • GB396653A - Method of manufacturing waterproof linen : en
  • GB396756A - Improvements relating to circular looms : en
  • GB397113A - Improvements in or applicable to forced draught furnaces : en
  • FR750267A - Ashtray : en fr
  • GB396490A - Improvements in and relating to the production of spot carbon papers : en
  • US1921172A - Average temperature control mechanism for heating systems : en
  • US1921474A - Manufacture of pneumatic tire casings : en
  • US1921483A - Photoelectric cell : en
  • AU720032A - Improvements in means for measuring and delivering liquids : en
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  • FR750271A - Device for visible vertical filing : en fr
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  • FR750457A - Diaphragms for pressurized electrolytic decomposition tanks : en fr
  • GB396588A - Improvements in fastening devices for tents, awnings and the like : en
  • FR750298A - Improvement in the manufacturing processes of self-lubricating rings with plumbagine or natural graphite coatings : en fr
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  • GB396467A - Improvements in and relating to the production of hexamethylenetetramine : en
  • US1921400A - Divided middle ring coupling : en
  • US1921454A - Total taking mechanism : en
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  • DE582301C - Metal cover strip, especially for car bodies of motor vehicles : de en
  • USD90439S - Design for a ventilator for motor : en
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  • FR750502A - Soot trap device : en fr
  • FR750578A - Anti-blinding device for automobile headlights : en fr
  • GB396720A - Improvements in automatic switches for use in telephone or like systems : en
  • US1921134A - Sanitary couch : en
  • US1921658A - Life preserver : en
  • US1921015A - Packaging of gas containing objects : en
  • USD90447S - Design for a shoe : en
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  • FR750541A - : fr
  • GB396790A - Control apparatus for colour lighting : en
  • FR750422A - Protective sheath for radium therapy : en fr
  • FR750575A - Pipe assembly device : en fr
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  • DE582046C - Arrangement for switch with arc extinguishing by flowing pressurized gas : de en
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  • US1921668A - Organic compound and method of treating the same : en
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  • GB396569A - Improvements in or relating to steel girders for concrete structures : en
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  • US1921360A - Mixtures of new isomeric dyestuffs and process of preparing them : en
  • US1921240A - Pouring cup : en
  • US1921640A - Transmitter tube for ultra-short waves : en
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  • US1921327A - Cryptographic printing apparatus : en
  • US1921560A - Film spool for roll film cameras : en
  • US1921960A - Process for reclaiming film scrap with an alcoholic alkali solution : en
  • US1922011A - Spring pressed window stop construction : en
  • DE582123C - Short-circuit proof diverter switch : de en
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  • US1921957A - Bearing : en
  • DE582276C - Process for the production of water-insoluble azo dyes : de en
  • US1921088A - Wave signaling system : en
  • US1921733A - Timing device for controlling telephone or other circuits : en
  • US1921169A - Battery terminal or connecter : en
  • US1921386A - Window sash construction : en
  • US1921816A - Eccentric driven high pressure pump : en
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  • US1921660A - Motor vehicle : en
  • US1920970A - Guy-line clamp : en
  • US1921090A - Bell swinging device : en
  • US1921279A - Oil recovery apparatus : en
  • US1921457A - Ventilator fitting : en
  • US1921024A - Alarm system : en
  • US1921339A - Axle bearing : en
  • US1921951A - Shock absorber : en
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  • USD90442S - Design foe a derrick : en
  • CA334603A - Engine valve lubricating device : en fr
  • US1921980A - Wrench : en
  • US1921654A - Manufacture of bolts, screws, and the like : en
  • US1921674A - Paper fastener : en
  • US1921839A - Aircraft having freely rotative sustaining wings : en
  • US1921880A - Starting apparatus for rotary engines : en
  • US1921927A - Fin tubing : en
  • US1921081A - Road reenforcement and joint : en
  • US1921471A - Receptacle for granular or pulverulent condiments for table use : en
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  • DE582287C - Process for the production of rubber substitutes from unsaturated fatty oils : de en
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  • GB396669A - An improved method of producing an end thickening in tubular bodies made by rolling with skew rolls : en
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  • US1921102A - Advertising device : en
  • US1921248A - Mucilage spreader : en
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  • US1921082A - Pin : en
  • US1921432A - Constant temperature apparatus : en
  • US1921870A - Film magazine closure : en
  • AU1027332A - Device usedfor advertising purposes and for disseminating light : en
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  • DK47610C - Electric drive Compressor for Refrigeration systems, especially for Refrigerators .. : da en
  • DE582322C - Closed, short-circuit-proof fuse cartridge : de en
  • US1921335A - Process for the surface finishing of lumber and shingles : en
  • US1921656A - Storage rack : en
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  • US1921313A - Method of preventing offsets : en
  • US1921952A - Sickle bar divider attachment : en
  • US1921178A - Temperature control apparatus : en
  • US1921781A - Stair cushion : en
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  • US1921008A - Pump for hydraulic systems : en
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  • US1921208A - Cover operator and holder for garbage cans and the like : en
  • US1921020A - Water motor for sprinklers : en
  • US1921890A - Cash drawer manifolding device : en
  • DE582121C - Transformer with disc coils separated from one another by support parts : de en
  • US1921730A - Lining for hot tops : en
  • US1921824A - Forming cylinders : en
  • US1921155A - Coin counting machine : en
  • US1921255A - Nitric acid concentration : en
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  • CA334691A - Chair tip : en fr
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  • US1921201A - Mechanism for transporting section-spacing blocks in book-binding machines : en
  • US1921523A - Golf and other playing ball : en
  • US1921914A - Disintegrating machine : en
  • AT134456B - Double tensioner for ski bindings. : de en
  • CA334655A - Water cooler and support : en fr
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  • US1921569A - Sawmill : en
  • US1921884A - Interchangeable journal box : en
  • CA334773A - Turbine blading : en fr
  • GB396455A - Improvements relating to light valves : en
  • US1920980A - Process of making synthetic resins, and coating-compositions containing them : en
  • US1921199A - Soap slicing machine : en
  • US1921076A - Process for the manufacture of aryl-alpha-naphthylamines : en
  • US1921577A - Can feeding system : en
  • FR750498A - Coupling, in particular for controlling vehicles, comprising coil springs inserted between the driving part and the driven part : en fr
  • DK47620C - Device for placing the cover on a roller wrapper of a cigar wrapper. : da en
  • FR750463A - rotating turret gin : en fr
  • US1921409A - Telephone system : en
  • US1921710A - Regulating system : en
  • US1922000A - Combined shackle and bearing mounting for vehicle springs : en
  • US1921186A - Game : en
  • US1921764A - Feeding device : en
  • GB396656A - Improvements in wings for high speed aircraft : en
  • GB396541A - Safety razor : en
  • GB397136A - Improvements in or relating to oils obtained from rubber : en
  • FR750400A - Device for power factor compensation of induction furnaces : en fr
  • AT134431B - Recommended for creating a moiré effect, especially in artificial silk fabrics. : de en
  • US1921026A - Collapsible support for tables, chairs, etc. : en
  • US1921709A - Pipe coupling : en
  • US1921145A - Method of and apparatus for controlling the flow of fluids : en
  • FR750230A - Improvements made to die bearings : en fr
  • FR750309A - Shoe Sewing Machine Improvements : en fr
  • US1921176A - Lure : en
  • DE574755C - Glass resistant to metal vapors : de en
  • US1920982A - Method of producing building slabs : en
  • US1921809A - Gas pipe stop : en
  • US1921275A - Peanut butter and process for making the same : en
  • US1921605A - Means for handling and transporting freight : en
  • DE582043C - Process for the preparation of borneol : de en
  • US1921727A - Method of separating isomeric monochloro-ortho-hydroxy-diphenyls : en
  • US1921264A - Clutch : en
  • US1921459A - Control mechanism for power transmission gears : en
  • US1921698A - Spraying apparatus : en
  • US1921909A - Radiator cap : en
  • US1921581A - Hitch mechanism : en
  • US1921634A - Process of preparing hydrated citric acid : en
  • GB396503A - Improvements in and relating to the manufacture of rubber products : en
  • GB396618A - Improvements in or relating to the manufacture of printing inks and their use in thegraphic arts : en
  • US1921253A - Fire unit for furnaces : en
  • DE582305C - Lid closure for wide-necked bottles, cans and similar containers : de en
  • FR750221A - Improvements to coffee filters : en fr
  • US1921769A - Driving axle : en
  • US1921799A - Remote motor control : en
  • US1921822A - Manufacture of roads, yards, aerodromes, and like surfaces and means therefor : en
  • CA334785A - Tube severing mechanism : en fr
  • US1921094A - Bath spray or like connecter : en
  • US1921117A - Wave-meter for ultra-short waves : en
  • US1921541A - Camera shutter : en
  • GB396514A - Improvements relating to electron emitters and to the manufacture of the same : en
  • GB396598A - Hydraulically-controlled infinitely-variable transmission mechanism : en
  • GB396616A - Improvements in oil engines : en
  • US1921671A - Overjacket for molds : en
  • US1921639A - Water tube boiler : en
  • US1921741A - Apparatus for controlling industrial processes : en
  • AT134473B - Indicator device for cakes or the like. : de en
  • DE582124C - Electric display instrument : de en
  • FR750441A - Electro-magnetic device for controlling the orientation of automobile headlights : en fr
  • GB396757A - Improvements relating to circular looms : en
  • US1921833A - Decelerometer : en
  • US1921558A - Dumping car : en
  • US1921846A - Valve : en
  • US1921966A - Production of wood pulp : en
  • US1921261A - Hinge construction : en
  • US1921096A - Electric attachment plug : en
  • US1921945A - Oyster culture : en
  • US1921036A - Egg timer : en
  • US1921779A - Gas cock : en
  • US1921872A - Soft collar : en
  • US1921535A - Device for feeding infants : en
  • US1921539A - Chemical pulping process : en
  • US1921101A - Production of aliphatic di-car-boxylic acids : en
  • AT134482B - Single dispenser cigarette case. : de en
  • DE582161C - Manufacture of cleaning openings on pipe elbows made of lead using the pressing process : de en
  • US1921166A - Pulverizer : en
  • US1921570A - Illuminated advertising sign : en
  • DE575849C - Process for the production of pipes reinforced with wire : de en
  • US1920960A - Device for cleaning golf balls or the like : en
  • US1921058A - Manufacture of boots and shoes : en
  • AT134413B - Ambulance, can also be used as a living or luggage car. : de en
  • DE582310C - meat grinder : de en
  • FR750239A - Packing box : en fr
  • DE582173C - Improvement of lubricating oils : de en
  • DE582291C - Device for displaying excessive speeds in vehicles : de en
  • US1921997A - Shoe fitting device : en
  • US1921272A - Switch : en
  • US1921557A - Alarm and safety system : en
  • DE582204C - Telephone amplifier in double tube intermediate amplifier circuit : de en
  • GB397129A - Improvements in or relating to methods of making leather : en
  • US1921328A - Comb for the hair : en
  • US1921963A - Fade-in and fade-out for motion picture film sound record : en
  • US1921322A - Wrench : en
  • US1921713A - Electrical compensating arrangement : en
  • AT134471B - Weft trimming and holding device. : de en
  • DE582127C - Matting agent for paints and varnishes : de en
  • DE582195C - Process for the direct production of condensation products from formaldehyde and coal tar oils : de en
  • FR750444A - Improved machine for heating small oblong objects, in particular the welding of glass ampoules : en fr
  • DE582201C - Collecting sheet designed as an index card for storing individual coins in coin collections : de en
  • FR750252A - Collar for draft animals : en fr
  • FR750345A - Improvement in the traction of various agricultural machines : en fr
  • AT134438B - Carburetor. : de en
  • US1921133A - Toy pistol : en
  • FR750403A - Process for preparing a solid glue, particularly applicable to the veneer of wood and resulting products : en fr
  • GB396568A - An improved process of and apparatus for the production of ketens by pyrolysis : en
  • FR750587A - Gas regulator system : en fr
  • FR750392A - New nozzle for gas rail : en fr
  • AT134455B - Device for filling an absorbent mass, e.g. B. cotton wool or the like. Containing fuel container of lighters. : de en
  • US1921016A - Container closure : en
  • US1921158A - Insecticide : en
  • US1921374A - Snowplow : en
  • US1921428A - Aircraft structure : en
  • US1921594A - Ply stretching apparatus : en
  • AT134432B - Washing device. : de en
  • CA334677A - Shearing machine : en fr
  • AT134451B - Chamber rocket. : de en
  • AU846532A - A pneumatically operated grease gun : en
  • GB396554A - Improvements in and relating to printing machines : en
  • AT134406B - Rain cover. : de en
  • AT134428B - Beam-shaped component. : de en
  • US1921553A - Kiln : en
  • CA334729A - Elevator indicator : en fr
  • US1921597A - Wheeled vehicle : en
  • US1921697A - Abrasive feeding mechanism for stone cutting machines : en
  • GB397139A - Improvements in or relating to ventilators : en
  • GB397154A - Improvements relating to the protection of cathodes of thermionic valves : en
  • US1921035A - Wave filter : en
  • GB396726A - Machine for fixing attache case locks and similar fastenings : en
  • CA334698A - Manufacture of curved composite glass plates : en fr
  • CA334589A - Steam engine valve gear : en fr
  • AT134417B - Box for storing dental drills in an orderly manner according to the degree of their wear. : de en
  • DE582102C - Device for mixing liquids with one another or of liquids with solid bodies and for producing emulsions : de en
  • FR750458A - Call amplifier device on motor vehicles : en fr
  • GB396623A - Improvements in or relating to means for attaching knobs to spindles of locks and latches : en
  • CA334683A - Film feeding mechanism : en fr
  • DE582013C - Device to prevent single-phase operation of three-phase motors : de en
  • DE582199C - Bell gas container : de en
  • DK47616C - Surface capacitor with tubes rolled at both ends. : da en
  • US1921633A - Fruit halving and quartering machine : en
  • US1921065A - Electron emitter and process of making same : en
  • US1921362A - Water insoluble azodyestuff : en
  • US1921401A - Seat for cleaning windows : en
  • CA334763A - Shoe machine : en fr
  • AT134461B - Pyrophoric lighter. : de en
  • DE582066C - Process for the synthetic production of ammonia from its elements using iron carbide as a catalyst : de en
  • DE582120C - Device to prevent oscillation in switches whose moving switch contact is mechanically connected to the armatures of counteracting tear-off and holding magnets : de en
  • DE582208C - Multipole toggle switch with contact rollers and rigid mating contacts : de en
  • FR750485A - Mechanical transporter : en fr
  • GB397470A - Improvements in or relating to the production of colourations on textile materials made of or containing cellulose esters : en
  • FR750513A - Multipurpose gas stove : en fr
  • FR750582A - : fr
  • DK47627C - Daase, especially for Facial Powder. : da en
  • FR750304A - Machine for finishing stockings, socks and other hosiery : en fr
  • FR750405A - Cable : en fr
  • GB396507A - Improvements in or relating to dough mixing and kneading machines : en
  • FR750436A - Method and apparatus for making tube or cam glass : en fr
  • GB396593A - Improvements in and relating to track brakes : en
  • CA334640A - Potato digger : en fr
  • US1921506A - Shoemaker's tool : en
  • GB396704A - Improvements in or relating to automatic or semi-automatic telephone systems : en
  • GB397162A - Improvements in electric discharge tubes : en
  • DE582218C - Rectangular work table (group table) : de en
  • FR750536A - Rail fixing device with base plate interposed between the rail shoe and the cross member : en fr
  • GB396599A - An improved machine for making spirally-wound tubes, such as drinking straws, from paper strips : en
  • US1921387A - Filing cabinet : en
  • FR750324A - Double turn adjustable length watch strap : en fr
  • GB396654A - Improvements in or relating to a process for making intaglio printing inks : en
  • US1921025A - Hydraulic shock absorber with remote control and adjusting device : en
  • DE582053C - Curve guide for bucket conveyors : de en
  • DE561258C - Device for wing spinning, wing twisting and similar machines for exchanging the bobbins filled with bobbins : de en
  • DE582298C - Process for the production of a concentrated chocolate milk : de en
  • US1921320A - Grease rack : en
  • FR750464A - Counter control with improvement of the error curve by magnetic derivation of the flux passing through the poles of the current coil : en fr
  • GB396492A - Improvements in or relating to packing machinery : en
  • FR750369A - Improvements to liquid hydrocarbon stoves and burners : en fr
  • US1921580A - Machine for stacking and arranging biscuits and the like : en
  • GB396644A - Improvements in or relating to resilient power transmission mechanisms : en
  • GB396601A - Fluorescent screen : en
  • DE582224C - The loading width of the trolley can be changed : de en
  • FR750416A - Injector for combustion or explosion engines : en fr
  • DE582125C - Device for improving the load curve of induction measuring devices using a magnetic shunt attached to the current iron : de en
  • GB396740A - Improvements in or relating to antenna systems : en
  • FR750566A - Improvements to pressurized fluid brake devices : en fr
  • DE582240C - Coke oven filling car : de en
  • FR750442A - Weatherproof window protection device : en fr
  • US1921263A - Window regulator : en
  • US1921683A - Tank heater : en
  • US1921803A - Car roof : en
  • FR750472A - Control of the blades of blade chains used to operate boats : en fr
  • US1921517A - Film winding signal device : en
  • US1921112A - Wire wound armature : en
  • US1921647A - Image plate holding chamber for apparatus for measuring photograms : en
  • GB396595A - Improvements in air, gas or smoke extractors : en
  • FR750323A - Electric lamp : en fr
  • US1921649A - Method of mottling paper : en
  • US1922012A - Switch : en
  • FR750316A - Motor vehicle, in particular for advertising : en fr
  • FR750341A - Surface measuring machine : en fr
  • FR750581A - Coat and hat holder device : en fr
  • DE582295C - Chip protection for lathes, revolver bars and similar machine tools : de en
  • FR750360A - Method and machine for the simultaneous automatic mounting of the staples on the two tapes of a rack fastener : en fr
  • GB396641A - Improvements in or relating to rotary valves for internal combustion engines : en
  • DE582072C - Underfill device for excavator tracks : de en
  • US1921840A - Battery terminal or connecter : en
  • US1921371A - Method of producing puffed pulp : en
  • AU862832A - Improvements in and connected with chicken brooders : en
  • US1921218A - Fan : en
  • US1921925A - Dental flask : en
  • FR750359A - Improvements to machines to conform the upper to the curve of the shape : en fr
  • DE582196C - Single acting air pump for massage : de en
  • GB396483A - Improvements in and relating to memorandum and like pads and books : en
  • FR750533A - fancy case : en fr
  • GB396734A - Improvements in or relating to shoe supports : en
  • DE582049C - Electrical capacitor with a dielectric consisting of absorbent material, which is coated with an insulating compound that is liquid at normal temperature, e.g. B. Oel or other oil-containing substances, is impregnated : de en
  • DE582056C - Pressure medium braking device for controlling clutches : de en
  • US1921878A - Locomotive terminal : en
  • US1921534A - Propeller : en
  • US1921548A - Juvenile tiring : en
  • US1921992A - Aircraft : en
  • USD90444S - Design fob a portable humidifier : en
  • DE582307C - Tin can or similar container with knife used to cut open the inner lid : de en
  • FR750220A - Improvements to identity rings for birds and other animals : en fr
  • GB396575A - Process for the preparation of a new type of fibrous cellulose ester : en
  • FR750371A - Pedestal table : en fr
  • FR750413A - Improvements to grinder rollers : en fr
  • US1921493A - Cutter bar operating means : en
  • USRE18913E - Chair back ob rest : en
  • DE582236C - Process for the production of pile jacks or pile gratings consisting of mutually braced piles : de en
  • DE582323C - Hard alloy for work equipment and tools : de en
  • US1921361A - Water insoluble azodyestuff and fiber dyed therewith : en
  • FR750571A - Device for mounting lamps with small thermal capacity : en fr
  • CA334676A - Shears : en fr
  • DE582299C - Process and device for the production of cellulose : de en
  • US1921818A - Coaster wagon : en
  • US1921467A - Adjustable garment cuff : en
  • CA334622A - Kneeling pad : en fr
  • US1921212A - Operation of furnaces : en
  • US1921636A - Aeroplane : en
  • US1921720A - Revolving cylinder pump : en
  • US1921452A - Fire extinguisher : en
  • AT134474B - Device for scrubbing, sanding, polishing, etc. like : de en
  • US1921220A - Conditioner and agitator : en
  • US1921525A - Ball handle : en
  • US1921793A - Spring testing machine : en
  • US1921744A - Sheet handling mechanism : en
  • AT134439B - Pupin rice coil set with common metal cap. : de en
  • AT134498B - Cash register. : de en
  • CA334769A - Lasting machine : en fr
  • FR750414A - Multi-polarity, squirrel-cage asynchronous AC motor provides starting, acceleration and braking without interrupting torque : en fr
  • US1921083A - Method of cementing soles : en
  • DE582254C - Method and device for the production of artificial skin : de en
  • US1921688A - Attachment for road treating machines : en
  • DE582088C - Milk heater : de en
  • US1921821A - Insect repeller : en
  • US1921235A - Reciprocating movement : en
  • CA334637A - Free wheeling device : en fr
  • FR750385A - Improved layout for aircraft landing : en fr
  • DE582261C - Device for maintaining the operability of gas valves in operation : de en
  • US1921536A - Production of molybdenum and tungsten carbonyl : en
  • US1921037A - Sound recording : en
  • US1921876A - Match book holder for ash receptacles : en
  • DE582068C - Process for the preparation of mixed cellulose esters : de en
  • DE582151C - Circuit arrangement for electrostatic relays : de en
  • DE582332C - Zipper : de en
  • FR750452A - Electromagnetic control device for clockwork and other mechanisms : en fr
  • US1921896A - Gazing globe : en
  • US1921384A - Wire stripping apparatus : en
  • US1922005A - Method of plating : en
  • USD90446S - Design fob : en
  • US1920973A - Valve-operating mechanism : en
  • US1921298A - lewis : en
  • DE582189C - Hydraulic swing door brake : de en
  • US1921747A - Rotary pump or the like : en
  • CA334693A - Vacuum milk receiver : en fr
  • US1921973A - Garden implement : en
  • CA334694A - Centrifugal bowl : en fr
  • US1921655A - Machine for finishing the heads of bolts, screws, and the like : en
  • AT134467B - Device for holding objects that are difficult to bring into the image area. : de en
  • AT134480B - Process for covering plaster walls and objects with a cement cold glaze. : de en
  • US1921061A - Vacuum tube : en
  • US1921652A - Smoker's cabinet : en
  • CA334750A - Voltage compensator : en fr
  • DE576146C - Surface carburetor : de en
  • DE581987C - Circuit arrangement for private branch exchanges : de en
  • DE582319C - Process for the preparation of basic ethers of the pyridine series : de en
  • DE582051C - Solvents and fixators for fragrances : de en
  • FR750292A - Glove with device for opening the ends of the thermowells : en fr
  • GB396624A - Improvements relating to ventilation particularly as protection against poison gas or the like : en
  • US1921466A - Automobile heater : en
  • US1921844A - Crystal controlled oscillator : en
  • US1921508A - Geometrical instrument : en
  • US1921892A - Drawing instrument and adjunctive parts thereof : en
  • US1921622A - Hinge for automobile seats : en
  • US1921995A - Drum type sander : en
  • CA334656A - Rectal and vaginal medicator : en fr
  • AU851132A - Extra-air valve for internal combustion engines : en
  • CA334681A - Lightning arrester : en fr
  • FR750293A - Double starched false collar : en fr
  • FR750349A - Moldable plastic materials based on polymerized vinyl acetate and cellulosic esters : en fr
  • GB396777A - Improvements in and relating to fabric measuring machines : en
  • US1921724A - Shipping carton : en
  • AT134460B - Container lock. : de en
  • AT134454B - Ignition device with a container for holding ignition pills. : de en
  • US1921046A - Draft gear : en
  • US1921289A - Apparatus for burning sulphur : en
  • US1921845A - Dynamo-electric machine : en
  • US1921868A - Method of melting nonferrous metals : en
  • CA334733A - Water softening apparatus : en fr
  • CA334787A - Railway car truck : en fr
  • CA334775A - Insecticide : en fr
  • US1921417A - Alloy : en
  • US1921472A - Production tester : en
  • AT134494B - Process for the extraction of high-percentage potash from technical potash eyes. : de en
  • US1920992A - Headlight shield : en
  • US1921470A - Method of visually recording sound beats : en
  • US1921630A - Method and instrument for determining the position of targets emitting short flashesof light : en
  • US1921504A - Composite web and method of making the same : en
  • AT134492B - Method of making artificial stones from lime. : de en
  • GB396634A - Improvements in or relating to methods of preparing and preserving bread, or other like baked products : en
  • CA334667A - Chemical reaction device : en fr
  • US1921007A - Rubber composition and method of preserving rubber : en
  • US1921334A - Triarylmethane dyestuff : en
  • US1921789A - Pulsation apparatus : en
  • AT134408B - Sterilizer. : de en
  • AT134430B - Enclosure made of wire mesh or mesh. : de en
  • CA334724A - Condensate evacuation apparatus : en fr
  • FR750514A - Device for the bridge game brand : en fr
  • GB396650A - Improvements in a method and apparatus for making undercut saw teeth or the like : en
  • DE582083C - Optical sound reproduction device : de en
  • DE582235C - Process for the production of highly refractory masses : de en
  • CA334649A - Ignition amplifier : en fr
  • US1920988A - Mechanical movement : en
  • US1921373A - Method of conducting chemical reactions in liquid media : en
  • US1921617A - Waterless gasometer : en
  • AT134423B - Device with a gas-filled fluorescent tube. : de en
  • AT134424B - Safety device for electric fluorescent tubes operated on transformers. : de en
  • US1921050A - Dye printing plate and sensitized material therefor : en
  • US1921159A - Power actuated typewriter : en
  • AT134403B - Protective devices on metal parts located inside electrical discharge vessels prevent discharges. : de en
  • US1921999A - Bandage fastener : en
  • US1921336A - Copper-containing azodyestuff : en
  • US1921441A - Electric resistance device : en
  • US1921860A - Distillation of wax materials : en
  • US1921873A - Fuel injector : en
  • DE582212C - Electric high pressure metal vapor arc lamp with inert gas basic filling : de en
  • CA334728A - Container adjustable bottom : en fr
  • US1921856A - Production of gaseous mixtures containing hydrogen and nitrogen from methane : en
  • US1921762A - Gas range : en
  • FR750597A - Method and means for protecting the introduction of metal into containers and for improving the work of hydraulic presses or the like for expelling metals : en fr
  • US1921311A - Linter gin drive : en
  • US1921461A - Protecting current-interrupter in b battery eliminators : en
  • FR750217A - Advanced plow for plowing on inclined terrain : en fr
  • US1921357A - Connection with continuous rolling machines and the like : en
  • AU104748B2 - Improvements in light signals : en
  • US1921549A - Apparatus for manufacturing ice in plates : en
  • US1921723A - Electrical transmission system : en
  • US1921841A - Method of charging accumulators : en
  • US1921864A - Underfeed rotary grate stoker : en
  • US1921962A - Container : en
  • US1921123A - After treatment of filaments : en
  • US1921179A - Cluster crimper for coin wrappers : en
  • US1921589A - Method of making rolled steel valve bodies : en
  • US1921915A - Vacuum valve : en
  • AT134440B - Installation on telephone systems in order to make transmitted calls incomprehensible to unauthorized persons. : de en
  • AT134493B - Mains connection device for the purposes of sound amplification and communication and hot-cathode rectifier bulbs for use in such devices. : de en
  • DE582191C - Device for connecting the striking strap with the shooter driver and the baton : de en
  • CA334674A - Fusing process : en fr
  • US1921407A - Telegraph transmitting apparatus : en
  • CA334782A - Vehicle lifting jack : en fr
  • DE582035C - Both manually and electrically operated drive device for opening and unclamping motor vehicle tops : de en
  • DE582253C - Method for treating bare bones and leather : de en
  • US1921584A - Mandrel : en
  • US1921783A - Exhaust purifier : en
  • GB396563A - An improved automaton : en
  • GB396660A - Improvements in or relating to door and like fastenings : en
  • CA334754A - Range : en fr
  • FR750391A - Improvements in the treatment of surfaces of objects in aluminum or aluminum alloys : en fr
  • CA334738A - Band pass amplifier : en fr
  • AT134457B - Card shuffler. : de en
  • AU751932A - Improvements in incubators : en
  • US1920974A - Method of rebuilding lasts : en
  • DE582262C - Spiral slide : de en
  • AT134401B - Method and nozzle for pressing bricks by means of extrusion. : de en
  • US1921418A - Alloy : en
  • AT134483B - Cotton filter for cigarettes. : de en
  • US1921143A - Brace for articles of furniture : en
  • CA334777A - Electric heating device : en fr
  • CA334615A - Bottle cap : en fr
  • CA334735A - Superheterodyne radio receiver : en fr
  • AT134436B - Remote liquid level indicator for high containers, especially steam boilers. : de en
  • DE582093C - Change gears, especially for bicycles, with a chain drive wheel that can be changed in diameter : de en
  • DE582100C - Process and device for cooling, ventilating and clarifying beer wort : de en
  • DE582186C - Process for the production of joint strips for roof and wall coverings from sheet-like fiber material : de en
  • DE582219C - Method for adjusting the volume of photographic sound recordings : de en
  • CA334605A - Coupling : en fr
  • US1921424A - Medicinal remedy : en
  • US1921491A - Power shovel dipper : en
  • US1921514A - Nail : en
  • US1921115A - Well head equipment : en
  • US1921355A - Device for the manufacturing of knotted carpets and the like : en
  • US1921746A - Test block : en
  • US1921663A - Shoe heel : en
  • US1921732A - Hot top : en
  • US1921859A - Elimination of key shocks : en
  • US1921959A - Material transporting and handling apparatus : en
  • DE582037C - Roller bearing for door and window hinges : de en
  • DE582070C - Air-cooled condenser, especially for refrigerators : de en
  • US1921907A - Exhaust turbo blower for internal combustion engines : en
  • CA334654A - Grinding wheel guard : en fr
  • FR750218A - Improvements to mechanical pencils with automatic mine feed : en fr
  • DE582136C - Pipe and hose coupling with valve that opens and closes automatically when coupling and releasing : de en
  • CA334666A - Refillable vanity case : en fr
  • US1920986A - Method of making combined abrasives and holders : en
  • US1921302A - Header board stake : en
  • US1921256A - Multicompartment tray and method of making the same : en
  • US1921511A - Printing machine : en
  • DE582024C - Strap closure for steamer : de en
  • GB396521A - Improvements in or relating to electric batteries : en
  • GB396657A - Process for the manufacture of cellulose esters : en
  • CA334601A - Tobacco pipe : en fr
  • FR750586A - Lighting and electric starter machine for starting combustion engines and charging the battery, in combination with a battery ignition system : en fr
  • GB396694A - Brake operating mechanism for rail vehicles : en
  • CA334690A - Mud guard and radiator shell : en fr
  • AT134418B - Lorgnon. : de en
  • US1921612A - Process of producing laminated glass : en
  • US1921670A - Float-controlled suction intake device for forced feed lubricating systems : en
  • DE582142C - Image projector with optical compensation in connection with light sounder for reproducing image sound films : de en
  • DE582044C - Process for the production of practically sulfur-free phenolate liquor : de en
  • US1921403A - Article working apparatus : en
  • CA334687A - Cellulose plastic composition : en fr
  • CA334704A - Ampoule testing apparatus : en fr
  • CA334770A - Shoe upper shaping machine : en fr
  • DE582232C - Method for dressing walls, blankets, utensils or decorative objects with flat mussel shells, in particular with flat shells of the cape mussel : de en
  • FR750505A - : fr
  • GB396454A - Improvements in or relating to pit props and chock pieces for use in coal mines and the like : en
  • GB396479A - Window with rollable netting for protection against insects : en
  • DE582303C - Hollow steering column for cars : de en
  • DK47628C - Automatic for Use in connection with Utensils, which must be released for Use during certain periods. : da en
  • US1921032A - Safe : en
  • GB396758A - Improvements in circular looms : en
  • DE582273C - DC power supply unit : de en
  • FR750210A - Compressor : en fr
  • FR750480A - New metallic coloring materials : en fr
  • US1921040A - Combination window and radiator inclosure : en
  • CA334721A - Elastic fabric : en fr
  • US1921265A - Pumping apparatus : en
  • US1921969A - Soft collar pin : en
  • US1921540A - Manufacture of glassine papers : en
  • FR750523A - Corset closure clip : en fr
  • US1921499A - X-ray apparatus : en
  • US1921743A - Process for purifying zinc ore : en
  • CA334715A - Slicing machine : en fr
  • FR750249A - New improved wrapping machine : en fr
  • FR750561A - Typewriter or accountant with automatic device intended to facilitate the simultaneous establishment of receipts, bills of exchange or other documents and of a border : en fr
  • DE582194C - Connection sleeve for the extension members of an iron pit lining that collide with the interposition of a flexible insert : de en
  • US1920961A - Method of making inflatable articles : en
  • US1921029A - Towable motor cycle : en
  • DE582036C - Swivel device for vehicle headlights : de en
  • CA334723A - Spare tire cover : en fr
  • DE581942C - Circuit arrangement for telephone systems with several exchanges : de en
  • AT134448B - Method and device for treating and processing artificial silk. : de en
  • FR750450A - Method for scanning wet film, in particular for television : en fr
  • GB396586A - An automatically controlled carburettor for internal combustion engines : en
  • FR750471A - Hydraulic transmission liquid fuel pump for internal combustion engine of mechanical injection type : en fr
  • GB396750A - An improved process for manufacturing a smooth string of hard fibrous hemp : en
  • FR750296A - Reactions on carbonaceous materials using hydrogenating gases : en fr
  • FR750504A - Corset-belt with strap : en fr
  • GB396485A - Improvements in or relating to electric burglar alarm systems : en
  • US1921941A - Electrodeposition of palladium : en
  • US1921943A - Screened vent cap : en
  • AU858632A - Process of producing butyl alcohol and acetone : en
  • FR750484A - Hair waver : en fr
  • FR750350A - Process for preparing artificial masses from vinyl derivatives : en fr
  • FR750522A - Casing for quay walls, harbor breakwaters and similar constructions : en fr
  • US1921073A - Pipe : en
  • US1921197A - Expansible sprocket or pulley : en
  • US1921271A - Belt for garments and the like articles : en
  • US1921850A - Process of distillation : en
  • US1921290A - Vehicle side signal : en
  • DE582156C - Device for achieving synchronization of toothed coupling members before they are engaged : de en
  • FR750222A - Articles of clothing of all kinds knitted, worked, woven or manufactured in any other way analogous to a metallic protector : en fr
  • GB396686A - Improvements in means for actuating pyrophoric lighters and gas lighters : en
  • DE582011C - Pressure switch controlled by a tubular spring : de en
  • DK47630C - Device for deep-water fishing gear with seine without belly and with free sub-counter. : da en
  • GB396484A - Improvements in or relating to optical aiming devices for machine guns : en
  • US1921402A - Tape drive : en
  • US1921882A - Railway car truck and journal box : en
  • US1921388A - Process of making hydrochloric acid : en
  • US1921398A - Manufacture and separation of sul : en
  • FR750294A - Interchangeable electrode spark plug : en fr
  • FR750556A - Device for tuning reception devices used for high-frequency carrier wave communications, for example, in wireless telephony or telegraphy : en fr
  • DE582132C - Compensating measuring device : de en
  • FR750205A - Device for image transformation : en fr
  • DE582062C - Device for measuring the span of running fabric webs on textile machines : de en
  • US1921987A - Surgical splint : en
  • US1921533A - Fluid pressure connection : en
  • GB396530A - Improvements in or relating to playing balls, particularly golf or the like balls, and the manufacture thereof : en
  • GB396622A - Improved system for driving propellers : en
  • GB397137A - Improvements in yarn manufacture : en
  • FR750529A - Process for obtaining pure zinc oxide practically free of lead from roasted zinc ores, foundry and galvanizing ash; and, in general, of all zinciferous and lead-containing materials and residues : en fr
  • US1920993A - Tabulating machine : en
  • US1921455A - Method of and apparatus for treating sheet rubber : en
  • US1921903A - Elastic fluid turbine : en
  • US1921813A - Head rod holder : en
  • US1921054A - Cleaning fluid : en
  • US1921306A - Process for concentrating ores and other mineral aggregates : en
  • US1921389A - Glassware transfer device : en
  • AT134499B - Discharge tube with spring-loaded hot cathode. : de en
  • DE582197C - Coffee brewer : de en
  • GB396562A - Improvements in charge moistening devices for internal combustion engines : en
  • FR750584A - Self-closing valve for toilet flushing devices. : en fr
  • US1921114A - Method and apparatus for producing rolled bodies from powderous materials : en
  • US1921790A - Electric incinerator : en
  • US1921044A - Bearing : en
  • DE582117C - Wheel button : de en
  • FR750443A - Contact or catalyst materials and their manufacturing process : en fr
  • US1921181A - Centrifugal separator : en
  • US1921575A - Concentration and purification of latex : en
  • US1921393A - Receiver for glass forming machines : en
  • US1921624A - Testing apparatus : en
  • FR750531A - Process for removing hydrogen sulfide from gases : en fr
  • FR750336A - Multi-strand wire rope anchoring device : en fr
  • FR750459A - Relayless mounting mode for cinematographic systems with incandescent lamps : en fr
  • US1921425A - Polar relay circuit : en
  • US1921375A - Vulcanizing rubber : en
  • US1921009A - Electric blasting reel and cable : en
  • US1921603A - Method and apparatus for cracking oils : en
  • US1921144A - Flexible shaft coupling : en
  • AT134485B - Device for remote and local control of turnouts. : de en
  • CA334746A - Electric cable for telephone systems : en fr
  • FR750357A - Periscopic panoramic telescope with single or double fixed eyepiece : en fr
  • USRE18912E - Electric brake for automobiles : en
  • CA334660A - Prime mover : en fr
  • DE582187C - Projection apparatus, especially for illuminated advertising, with a screen that periodically covers the image : de en
  • US1921501A - Oscillation generator : en
  • US1921725A - Froth breaking : en
  • CA334753A - Stoker : en fr
  • CA334638A - Folding box : en fr
  • FR750243A - Process for the preparation of secondary aromatic amines : en fr
  • GB396707A - Improvements relating to microphone amplifiers : en
  • FR750374A - Two-way switch for automotive headlights : en fr
  • GB396538A - Mechanism for the ground-training of air-pilots : en
  • CA334727A - Container bottom : en fr
  • DE582290C - Eyeglass frame : de en
  • US1921423A - Highway traffic control system : en
  • GB396543A - An overlapping, continuously visible card index : en
  • FR750228A - Process for preserving aromatic products and apparatus for their preparation : en fr
  • US1921108A - Tennis and the like playing balls : en
  • US1921538A - Securing and supporting device for concrete reenforcement : en