• DE621399C - Device for measuring the length of running textile webs : de en
  • US2019610A - Shipping drum and method of making it : en
  • US2019587A - Shoe : en
  • US2019928A - Respirator : en
  • USD97390S - Design for a bottle : en
  • CA353940A - Glass substitute : en fr
  • US2020158A - Game : en
  • GB437769A - An improved process for making compounds of sulphhydryl keratinic acid and similar reduced degradation products of keratin with organic compounds containing arsenic : en
  • US2019689A - Refrigerant compressor : en
  • US2019485A - Method and apparatus for electrical precipitation : en
  • US2020155A - Waterproof combination suit : en
  • US2019994A - Art of producing electrolytic cells : en
  • US2019925A - Indicating and control device : en
  • US2019981A - Method and composition for producing a cold glaze on building materials and the like : en
  • FR789720A - Expedited telephone transmission device : en fr
  • FR789741A - Improvements in machines and processes for the manufacture and recording of phonographic records : en fr
  • US2020020A - Bed and cylinder printing press : en
  • US2020104A - Coffee percolator : en
  • US2020027A - Stacking machine : en
  • US2019787A - Knockdown box : en
  • CA353935A - Seamless tubing manufacture : en fr
  • USD97438S - Design for an auto signal sign : en
  • FR789906A - Improvements to grinding wheel grinding mechanisms : en fr
  • US2019558A - Multicylinder internal combustion engine : en
  • US2019964A - Cushion means for tools : en
  • US2019603A - Interconnection of transmission lines : en
  • US2020188A - Closure fastener : en
  • US2019961A - Conveying mechanism : en
  • US2019711A - Raising and lowering device for potato diggers : en
  • DK50867C - Hulsten. : da en
  • FR789762A - Quick coupling for pipes intended for liquid foodstuffs : en fr
  • GB437982A - Improvements in or relating to seats for water closets and the like : en
  • CA353892A - Joint : en fr
  • GB438270A - Improvements in devices for regulating the yarn-guide traverses on artificial silk spinning frames : en
  • DE603472C - Spindle drive for spinning, twisting and similar textile machines : de en
  • DE621113C - Point drive for local and remote control of points : de en
  • DE621491C - Device for optical copying of films : de en
  • GB437903A - Improvements in and relating to water heating apparatus : en
  • GB437891A - Improvements relating to free-wheel mechanism : en
  • CA353915A - Cork grip bush : en fr
  • GB437753A - An improved manufactured material applicable to furniture and otherwise employable : en
  • CA353877A - Scaffolding coupling : en fr
  • AU2215835A - Balancing apparatus : en
  • DE621143C - Stocking or sock with an elastic thread worked into the double edge : de en
  • FR789677A - Scanning process for internal combustion engines operating in the two-stroke cycle : en fr
  • AU2231335A - Improved method of attaching covering plates or sheets of hard material to solid walls : en
  • US2019705A - Household appliance : en
  • US2019782A - Necktie : en
  • US2020153A - Animal trap : en
  • DE621602C - Artificial teeth : de en
  • GB437710A - Improvements in chain gearing : en
  • GB437883A - System of bookbinding : en
  • US2020002A - Packing : en
  • US2019799A - Sink drain apparatus : en
  • GB437913A - Improvements in portable punching and riveting presses : en
  • FR789911A - Joinery panels : en fr
  • US2020170A - Towel apparatus and method of laundering the same : en
  • GB437925A - Improvements relating to wheel structures having pneumatic tyres : en
  • US2019687A - Alloy : en
  • US2019846A - Dyestuff of the anthraquinone series : en
  • US2019769A - Apparatus for timing balances : en
  • US2019601A - Telephone substation apparatus : en
  • DE621442C - Process for the production of vacuum vessels from glass with electrode feedthroughs : de en
  • FR789954A - Guide body, provided with notches, for mechanical pencil leads : en fr
  • DE621249C - Extension part for the route expansion : de en
  • GB437664A - Improvements in or relating to mechanical stokers for furnaces : en
  • US2020063A - Hog oiler : en
  • DE621231C - Device for securing bicycles u. Like. Against theft : de en
  • FR789652A - Advanced device to support and assemble the reel of combine-binders : en fr
  • CA353920A - Manger : en fr
  • US2019973A - Apparatus for feeding metal plates : en
  • DE621476C - Process for the preparation of acidic dyes : de en
  • GB437942A - Improvements relating to taps or faucets : en
  • US2019750A - Printer : en
  • US2019570A - Wire strapping for packages with twisted tie : en
  • CA353988A - Automobile frame : en fr
  • FR789731A - Connection between the upper part and the bogie of rail vehicles, in particular rail cars : en fr
  • US2019754A - Preparation of organic acids : en
  • CA354015A - Vehicle hood : en fr
  • CA353885A - Poultry feeder : en fr
  • DE621334C - Photographic camera : de en
  • GB437699A - Improvements relating to ball and roller bearings : en
  • GB437779A - Improvements in or relating to the method of dewaxing a wax-bearing oil, to a lubricating oil of low pour point, and method of preparing same : en
  • US2019726A - Combination lifting and forward propulsion device for use on air and water vehicles : en
  • US2020106A - Thermal time relay : en
  • DE621487C - Single, multiple and multiple clamps for pipes and similar bodies in the form of a retaining rail and smooth tensioning strap : de en
  • DE621509C - Device for closing packs : de en
  • US2019521A - Collar and shirt support : en
  • US2020119A - Motor supporting means : en
  • GB437657A - Manufacture of cupriferous dyestuffs : en
  • GB437927A - Improvements in or relating to starters for internal combustion engines : en
  • DE621455C - Process for the preparation of compounds of the Bz-2-azabenzanthrone series : de en
  • FR789901A - Improvement in billiards : en fr
  • GB437992A - Improvements in or relating to knitting machines and to fabrics made thereon : en
  • GB437997A - Improvements in or relating to electrical signalling systems : en
  • DE621289C - Process for the production of a foaming alcoholic beverage from cereals by fermentation : de en
  • US2019794A - Spindle rail lifting mechanism : en
  • DE621417C - Sewing machine with feed bowls : de en
  • DE621313C - Extrusion press for the production of pipes from synthetic resin compounds : de en
  • FR789852A - One-piece knife and its manufacturing process : en fr
  • GB437791A - Improvements in or relating to gyroscopic indicators : en
  • DE620936C - Trunnion bearing for a cylinder hood that can be pivoted about its central axis, in particular for typewriter tables : de en
  • GB437909A - Improvements in and relating to methods of and apparatus for shaping glass : en
  • DE621238C - Upsetting mill : de en
  • DE621297C - Heavy current switches, especially oil switches : de en
  • US2019952A - Shuttle bobbin and method of making the same : en
  • DE621596C - Device to prevent exceeding the permissible brush wear on collectors : de en
  • FR789744A - Carburetor gasifier device : en fr
  • GB437714A - Improvements in and relating to the manufacture of cigarettes : en
  • GB437972A - Improvements in high speed high vacuum pumping installations : en
  • DE621290C - Unwinding device for strip-shaped rolling stock : de en
  • DK50862C - Method of Preparation of 2-Keto-1-gulonic acid. : da en
  • US2019820A - Manufacture of hollow ingots and tubes : en
  • US2019809A - Transmission line circuit : en
  • GB437692A - Improvements in or relating to the manufacture of hollow airscrew blades : en
  • GB437955A - Improvements in or relating to magnets : en
  • US2020240A - Shoe : en
  • US2020128A - Method of and means for controlling cable temperature : en
  • DE621510C - Storage of the rotating superstructure on the mobile substructure of slewing excavators and slewing cranes : de en
  • DE621552C - Coin gas meter : de en
  • FI16809A - Plate pasteurizer for milk and other liquid substances : en fi
  • GB437708A - Improvements in or relating to door stays : en
  • DE621273C - Hinge for connecting sheet metal parts : de en
  • USD97439S - Design for a pillow case or : en
  • US2020110A - Automatic thermo mechanical kick-off or disconnecter : en
  • DE621392C - Ringing hourglass : de en
  • DE621425C - Liquid shock absorbers : de en
  • DE621450C - Process for the production of protective grilles, especially for automobile radiators : de en
  • GB437931A - Improvements in or relating to vertically moving shutters, windows, doors or the like : en
  • FR789686A - Multipurpose display case for vehicles used for advertising purposes : en fr
  • FR789703A - Auxiliary device for sewing machines : en fr
  • FR789853A - Improvements in motor vehicles, and in particular in those used for amusement purposes : en fr
  • GB437960A - Improvements relating to exercising apparatus : en
  • FR789788A - Magnetic flywheel current generator : en fr
  • FR789950A - Improvements to engine fuel vaporization devices : en fr
  • GB437809A - Improvements in or relating to sheet feeding mechanism for sheet folding machines : en
  • GB437983A - Improvements in or relating to optical warning devices for preventing unauthorised use of cycles and other vehicles : en
  • US2020003A - Mining machine : en
  • US2020019A - Apparatus for measuring high temperatures : en
  • DE621389C - Device for producing molded bodies, in particular pipes, from a mixture of fiber material and cement : de en
  • DE621601C - Process for making long wool-like threads : de en
  • FR789956A - Animal feed or adjunct to feed, and manufacturing process : en fr
  • DE621567C - Process for the production of aromatic oxyaldehydes : de en
  • US2020146A - Train reporting mechanism : en
  • US2020148A - Coin slide : en
  • US2020203A - Ink container : en
  • DE621298C - Time remote switch for stair lighting : de en
  • GB437688A - Improvements in or relating to gears or couplings for the transmission of power : en
  • FR789692A - Device intended to receive a fluid in continuous movement for medical applications : en fr
  • FR789699A - Process for obtaining galvanic coatings on aluminum and aluminum alloys : en fr
  • GR5499B - HORIZONTALLY MOVING GAMES. : el en
  • DE621387C - Shooting range indicator : de en
  • CA353961A - Tire cover lock : en fr
  • FR789810A - Spindle improvement : en fr
  • GB438121A - Improvements in or relating to the collection of material in pneumatic conveyance and like systems : en
  • US2020198A - Seal : en
  • US2020269A - Slug galley for typographical machines : en
  • CA353918A - Toilet flushing mechanism : en fr
  • FR789669A - Game based primarily on the technique of the hobby known as crossword puzzles : en fr
  • FR789927A - Improvements in the manufacturing processes of rubber products and the resulting products : en fr
  • DE621150C - Armchair that can be converted into a lounge chair : de en
  • DE621481C - Room radiator : de en
  • US2020226A - Packing liner : en
  • US2019628A - Means for and method of feeding cleaning materials to feed water heaters : en
  • US2020180A - Supercharger : en
  • GB437835A - Improvements in or relating to saddles for cycles, motor-cycles and the like : en
  • US2020004A - Oil inclosed rotary : en
  • US2019967A - Heat exchanger : en
  • US2020189A - Method of producing solid bodies of carbon dioxide and the product : en
  • GB437651A - Reflectors : en
  • GB438000A - Dispensing magazines or holders for ice-cream spoons and the like : en
  • DE621447C - Outlet for conveyor devices for gentle loading of briquettes : de en
  • GB438005A - Improvements in and relating to liquid reservoir combs for the hair : en
  • DE621521C - Device and method for electric arc welding using materials emitting protective gases and using a protective cover : de en
  • US2019533A - Process for cooling gases : en
  • US2019877A - Apparatus for forming confections : en
  • US2019965A - Propeller : en
  • US2020011A - Spool : en
  • DE621230C - Process for the production of clearly soluble table salt from alkali chlorides and acids and poorly soluble salts of magnesium, alkaline earths and heavy metals : de en
  • DE621436C - Radial steam or gas turbine : de en
  • CA354013A - Rotary engine : en fr
  • US2019909A - Flying machine : en
  • USD97437S - Design for a bus signal sign : en
  • DE621529C - Process for the production of concentrated sulfur dioxide : de en
  • DE621376C - Tractor for tillage with rear axle drive : de en
  • DE621467C - Device for controlling single-phase induction motors with auxiliary phase winding and starting capacitor : de en
  • GB437706A - Improvements in or relating to apparatus for ascertaining the weight of the fluid contents of tanks or reservoirs especially overground tanks : en
  • GB437877A - Improvements in and relating to vehicle window regulators : en
  • US2020095A - Bottle and stopper assembly : en
  • US2019559A - Inhibitor and method of preventing the chemical attack of metals : en
  • US2019586A - Thread drawing machine : en
  • CA353937A - Pressure relief device : en fr
  • DE621492C - Ever-ready case for photographic equipment : de en
  • FR789781A - Color cinematographic shooting and projection process : en fr
  • US2020009A - Bubble still : en
  • US2020099A - Locomotive cylinder and cylinder saddle construction : en
  • CA353932A - Porous body manufacture : en fr
  • USD97413S - Design for a carriage robe : en
  • AU1993834A - An improved device for heating or cooling the interiors of buildings : en
  • FR789943A - Torpedo to tear off barbed wire : en fr
  • US2019547A - Process of producing granular poultry food : en
  • US2019815A - Oil burner tip : en
  • GB438119A - Improvements in the production of artificial textile materials : en
  • DE621475C - Process for the production of nitrodibenzanthrones : de en
  • US2019867A - Air filter : en
  • US2019704A - Electrical calculating machine : en
  • DE621517C - Arrangement for determining the location of the fault in pressure pipe systems for electrical pressure cables : de en
  • US2019517A - Can tester : en
  • US2019599A - Process for producing clad metals : en
  • GB437884A - Compositions useful in the stripping of dyed textiles : en
  • CA354000A - Temporary binder : en fr
  • FR789795A - Improvements to extinguishers : en fr
  • US2019720A - Cellulose acetate composition con : en
  • US2019860A - Carboy box : en
  • US2020057A - Process and apparatus for the treatment of artificial silk : en
  • US2020194A - Arrangement for : en
  • DE621346C - Process for preventing oxidation when metal sheets and other objects made of steel are glowing : de en
  • US2019921A - Process for stabilizing cellulose esters : en
  • FR789611A - Absorbent device with smoke filter for gas mask : en fr
  • FR789621A - Flat tire : en fr
  • GB437859A - A process for the production of stable lecithin emulsions : en
  • CA353895A - Razor : en fr
  • DE621350C - Process for keeping animal and vegetable matter fresh for food purposes : de en
  • FR789819A - Multi-pole arc extinguishing switch by means of a current or the expansion of a gaseous or vapor extinguishing fluid : en fr
  • FR789957A - Headquarters improvements : en fr
  • US2019677A - Surface grinder : en
  • US2019731A - Automatic shutter actuator : en
  • FR789939A - Time delay tubular mercury switch : en fr
  • US2020140A - Continuous tunnel kiln : en
  • US2019957A - Razor : en
  • USD97423S - Design for an outdoor lighting unit : en
  • GB437643A - Improvements in detectors for television signals : en
  • US2019890A - Method and apparatus for making fibrous shapes : en
  • US2019660A - Dispensing container : en
  • US2020072A - Method of packing acid sulphates and the like compounds : en
  • US2020129A - Loose leaf binder : en
  • DE620848C - Wire clamping and cutting device for baling presses with wire binding : de en
  • FR789728A - Transmission and distribution of electrical energy : en fr
  • GB437672A - Improvements in or relating to supply circuit arrangements for photo-electric cells and like low current consuming devices : en
  • GB437844A - Improvements in or relating to small manual addressing machines : en
  • GB437922A - Improvements relating to sheet feeding apparatus for typewriters : en
  • GB438117A - Braun tube and a method of producing the same with controlled light intensity : en
  • GB437871A - Manicure appliances : en
  • DE621397C - Stretch forming press : de en
  • DE621398C - Pipe roller with Boerdel device : de en
  • DE621545C - Electromagnetically operated air pump for aquarium ventilation : de en
  • US2019741A - Gauging apparatus : en
  • US2020080A - Load regulation of electric power plants : en
  • US2019582A - Washing machine mechanism : en
  • US2019911A - Food handling apparatus : en
  • FR789824A - Automatic fluid mixing nozzle : en fr
  • US2019611A - High frequency apparatus : en
  • GB437667A - Improvements in or relating to trailing or drag devices for use with trawl nets : en
  • GB438114A - Improved soil improvers and a process for their manufacture : en
  • US2020023A - Tire retreading and remolding apparatus : en
  • DE621270C - Device for supplying fuel when starting a gasifier machine : de en
  • US2020086A - Treating hydrocarbon oils : en
  • DE621563C - Device for conveying cigars or wraps to a plurality of processing points : de en
  • GB437730A - Improvements in or relating to the production of coherent coke from non-caking carbonaceous materials : en
  • DE621419C - Film switching device on roll film cameras : de en
  • US2020082A - Nonskid chain : en
  • DE621577C - Punch for the production of the parts necessary for mechanical toys and for the construction of models : de en
  • FR789890A - Improvements to devices for dispensing and measuring liquids : en fr
  • FR789938A - Television enhancements : en fr
  • GB437790A - Glycol ester derivatives : en
  • FR789949A - Gas heater : en fr
  • US2019745A - Transmission mechanism : en
  • GB437747A - Improvements in and relating to rheostat arrangements, suitable for use as lamp dimmers : en
  • GB438010A - Improvements in or relating to dials for radio-receiving sets : en
  • GB437745A - Manufacture of new monoazo dyestuffs : en
  • US2020008A - Head covering : en
  • US2020150A - Percussion musical instrument : en
  • FR789622A - Crampon to fix the insulation panels : en fr
  • DE621348C - Procedure for starting three-phase current shunt collector motors : de en
  • GB437704A - Improvements in the manufacture and production of flexible sheet materials having a sticky surface : en
  • GB437813A - Improvements in toy railways, tramways and the like : en
  • GR5495B - METHOD OF PRESERVATION OF FRESH WOUNDS AND OTHER FRESH PRODUCTS OF THE PLANT AND ANIMAL KINGDOM. : el en
  • US2020065A - Method of molding concrete articles : en
  • US2019781A - Cutting machine : en
  • US2019789A - Adjustable support for clamps : en
  • US2020215A - Cutter chain : en
  • US2019893A - Production of sulphuric acid by the contact process : en
  • GB437902A - Improvements in or relating to electric protective relays : en
  • FR789826A - Device for dispensing and pasting index cards, labels, postage stamps, etc. : en fr
  • GB437849A - Improvements in brakes with one or more brake shoes which can be pressed against theside of a cylindrical brake drum : en
  • FR789620A - A process for manufacturing excessively light crank axles for bicycles, tandems, etc. : en fr
  • GB437831A - Improvements in or relating to lifting jacks or supports for vehicles : en
  • GB437663A - Improvements in spraying apparatus : en
  • GB437648A - Improvements in the suspension of compasses in gimbals : en
  • US2019483A - Coking retort oven : en
  • US2019544A - Process for making shoes : en
  • US2020227A - Container : en
  • DE621286C - Strap closure : de en
  • DE621354C - Safety gate valve for gas lines : de en
  • GB437681A - Apparatus for the production of ammonium salts by the distillation of concentrated gas-liquor : en
  • US2019569A - Bearing : en
  • DE621055C - Card rack with guide rails accommodating the card carrier pins : de en
  • FR789714A - Method of saturating compressed air in a pneumatic motion transmission : en fr
  • GB437751A - Improvements in sieving machines : en
  • FR789822A - Improvements in water electrolysis : en fr
  • DE621251C - Process for the manufacture of metal hoses produced by helically winding a profiled metal strip : de en
  • DE621411C - Cattle lock : de en
  • DE621422C - Self-adjusting gear change transmission, especially for motor vehicles : de en
  • FR789808A - Chain tensioner for derailleur shifting bicycles : en fr
  • CA353985A - Ammonia production : en fr
  • FR789973A - High temperature electric light source for the emission of UV light : en fr
  • FR789804A - Improvement in the establishment of pistons for explosion or combustion engines : en fr
  • GB437900A - Improvements in electric couplings employed in electric heating devices : en
  • US2020025A - Cathode ray tube : en
  • US2020271A - Road working machine : en
  • USD97385S - Design for a combined change-mak : en
  • US2019585A - Method of securing together pieces of stock : en
  • USPP146P - Azalea : en
  • US2019573A - Fastening inserting machine : en
  • US2020069A - Interlock mechanism : en
  • FR789639A - Brake test equipment improvements : en fr
  • GB437916A - Improvements in or relating to turbo-gears, more particularly for vehicles : en
  • US2019831A - Greenhouse structure : en
  • USD97399S - Design for a bottle : en
  • GB437858A - Improvements in or relating to rotary web printing presses : en
  • FR789888A - Process for the preparation of vanillin : en fr
  • FR789948A - Process for increasing the viscosity of tars : en fr
  • US2019756A - Process of preventing pockmarking of dressed poultry : en
  • US2019901A - Printing mechanism : en
  • US2019950A - Determination of rope infection : en
  • US2019526A - Balanced door : en
  • US2019541A - Smoothness tester : en
  • US2019614A - Vehicle body construction : en
  • DE621534C - Rail joint connection with floating joint : de en
  • DE621438C - Control and synchronization device for multi-motor drives, especially for paper machines : de en
  • GB437850A - Improvements relating to motor vehicle doors and windows : en
  • DE621295C - Device for determining the liquid level in containers with essentially opaque walls, especially of galvanic elements and batteries : de en
  • FR789895A - Knitting loom : en fr
  • GB437828A - Improvements in or relating to electric discharge tubes : en
  • FR789770A - Road sign : en fr
  • FR789837A - Polyturbine propulsion : en fr
  • FR789959A - Container : en fr
  • GB437670A - Improvements in or relating to distributors for artificial manure, corn, seed and the like : en
  • DE613136C - Protective goggles for arc welders : de en
  • GB437823A - Improvements in or relating to the construction of rake-bars for side-delivery hay-rakes, swath-turners and tedders : en
  • DE621532C - Control device for three-cylinder machines : de en
  • GB437843A - Improvements in or relating to the separation of asphalt from heavy oils or residues : en
  • FR789629A - Vending machine : en fr
  • GB437825A - Improvements in or relating to the means for and method of covering or wrapping threads : en
  • FR789725A - New intermediates and their use in the production of azo dyes : en fr
  • US2019889A - Polishing machine : en
  • US2019843A - Automatic stacking apparatus : en
  • USD97394S - Design for a ring or similar article : en
  • FR789726A - Improvements in the construction of seats, mattresses, etc. : en fr
  • GB437939A - Improvements in and relating to rotary machines : en
  • US2019608A - Textile machinery : en
  • US2019788A - Photocopy machine : en
  • US2020201A - Vehicle brake : en
  • GB437650A - Improvements in and relating to mercury electric cut-outs : en
  • GB437770A - Improvements relating to gear profile testing machines : en
  • GB437815A - Improvements in and relating to barbed wire : en
  • GB437976A - Improvements in, or relating to, electrical signalling devices : en
  • US2019792A - Adjusting mechanism : en
  • US2020125A - Furniture and automobile polish : en
  • US2020145A - Typewriting machine : en
  • US2019894A - Pistol for distributing advertising projectiles : en
  • FR789775A - Ashtray : en fr
  • DE621542C - Firing grate in a furnace with one-sided lower combustion : de en
  • FR789662A - Double current telegraph installation : en fr
  • FR789685A - Fruit juicer : en fr
  • DE617025C - Process for the synchronous presentation of cinematographic films at different locations : de en
  • DE621483C - Audio tape with printed sound recordings : de en
  • FR789695A - Improvements relating to crushers : en fr
  • GB437845A - Improvements in or relating to tins having plug-in lids : en
  • GB437944A - Improvements in or relating to crepe threads and fabrics containing artificial filaments : en
  • FR789884A - Improvements to filters or portable water softening devices : en fr
  • FR789953A - A method and apparatus for absorbing gas constituents by means of liquid or solid substances, or both, and for regenerating these substances : en fr
  • GB437950A - Improvements in variable-speed mechanism : en
  • DE621258C - Arrangement for the electrical control of technical-physical operating parameters, for example for frequency control : de en
  • US2019650A - Fuel injection apparatus for internal combustion engines : en
  • US2020171A - Cast iron and the manufacture thereof : en
  • USD97445S - Design fob a coffeepot : en
  • USD97429S - Design fob an automobile : en
  • FR789761A - Arc lamp refinements : en fr
  • USD97375S - Design fob a medal or similar : en
  • CA353875A - Stuffing box mounting : en fr
  • CA353927A - Television apparatus : en fr
  • US2019898A - Electric clock : en
  • US2019510A - Modified polyhydric alcohol-polybasic acid resins and compositions containing them : en
  • US2019605A - Automatic check for refrigerating systems : en
  • US2019963A - Material discharge apparatus : en
  • FR789660A - Chisel intended for recording oscillations by mechanical means : en fr
  • GB437759A - Improved method of controlling the feedwater supply to steam generators : en
  • US2019817A - Locking device for vehicle doors : en
  • DE621471C - Contact plate for brushes of electrical machines : de en
  • FR789687A - Further training for vehicles used for advertising : en fr
  • FR789750A - Device for recording the low points of a railway track : en fr
  • GB437898A - A new curing salt : en
  • FR789626A - Easily emulsifiable compositions based on mineral oils : en fr
  • US2019945A - Electric clock thermostat : en
  • US2019972A - Drier for metal plates : en
  • FR789831A - Photographic sound recording device : en fr
  • DE621185C - Telephone handset with number switch : de en
  • US2019478A - Liquid level indicator : en
  • DE621353C - Device for automatic, electromagnetic control of the gas and heating current flow in cooking, roasting and baking ovens : de en
  • CA354021A - Continuous vegetable processing : en fr
  • DE621611C - Device for the automatic registration of the pointer deflections of measuring instruments : de en
  • DE620582C - Process for the manufacture of pipes : de en
  • DE619740C - Type lever drive for writing, writing arithmetic and similar machines : de en
  • GB437682A - Improvements in key-rings : en
  • CA353928A - Muscular contraction producing apparatus : en fr
  • DE620490C - Membrane gas pressure regulator : de en
  • FR789607A - Eyepiece the optical elements of which consist of a system of lenses and a system of prisms : en fr
  • US2019923A - Change speed gearing : en
  • DE621268C - Basic plan with cover sheets : de en
  • DE621536C - Safety device for switch : de en
  • USD97432S - Design for an alphabet for forming : en
  • GB437746A - Container for volatile insecticides, fungicides, disinfectants, deodorisers and perfumes : en
  • GB437853A - Improvements in or relating to a method of and means for supplying fuel to internal combustion engines : en
  • GB438023A - Improvements in processes for the manufacture of alloy steels and irons : en
  • FR789756A - Process for the manufacture of vegetable oils : en fr
  • FR789834A - Method of manufacturing a product intended for the rapid washing of laundry : en fr
  • DE621505C - Artificial edge for skis and similar sports equipment : de en
  • DE621597C - Changeable capacitor, in particular a rotary capacitor with two layers of different polarity that can be displaced against one another and are applied directly to a carrier made of ceramic material : de en
  • USD97398S - Design for a toilet paper holder : en
  • DE620912C - Line switching device for flat panel typewriters : de en
  • GB437945A - Improvements in or relating to camera lenses and to cameras embodying them : en
  • GB438273A - Improvements in apparatus for controlling automatically, temperature, pressure, or other physical conditions : en
  • DK50860C - Procedure for keeping liquid substances in ready-to-use condition for a long time. : da en
  • AU1949734A - Improvements in or relating to electrical oscillation generators and control apparatus therefor : en
  • DE621506C - Game figure driven by a spring mechanism to reproduce the movements of the belly dance : de en
  • GB438110A - Improvements in and relating to moulded products : en
  • DE621503C - Trigger device for automatic firearms : de en
  • AU2239935A - Foundation garments : en
  • DE621243C - Method for operating asynchronous reactive power machines : de en
  • CA353890A - Eye testing apparatus : en fr
  • CA353912A - Photographic emulsion : en fr
  • CA353873A - Vacuum flask stopper : en fr
  • US2020045A - Instrument for locating the metatarsal arch : en
  • GB438006A - Improvements in and connected with water heaters : en
  • GB438125A - Improvements in and relating to the loading of telephone lines, particularly cables,for carrier frequency current transmissions : en
  • CA353930A - Refractory and abrasive material : en fr
  • US2019480A - Method of hardening iron castings : en
  • CA353952A - Superheterodyne radio receiver : en fr
  • US2020054A - Automobile chassis construction : en
  • DK50863C - Method of Preparation of 2-Keto-1-gulonic acid. : da en
  • CA353934A - Cementitious material : en fr
  • DE621414C - Stream windsifter : de en
  • AU1989834A - A thermostatically controlled hair curler : en
  • FR789799A - Reaming device for surface tissue treatment : en fr
  • DE621499C - Metal net for cooking meat, galvanizing and refining objects or the like. : de en
  • DE621574C - Numbers roll, especially for counters of wet runner water meters : de en
  • US2020235A - Rotor screw suitable for helicopters : en
  • CA353869A - Shoe : en fr
  • CA353942A - Cigarette manufacture : en fr
  • AU2045734A - An improved brickmaking machine : en
  • CA353977A - Steam turbine shaft packing : en fr
  • USD97442S - Design for a plate or similar : en
  • US2019496A - Apparatus for producing copper and other metal rods and the like : en
  • US2020241A - Apparatus employed in the treatment of hydrocarbon oils : en
  • FR789820A - cigarette case : en fr
  • GB437869A - Improvements relating to the softening of raw rubber and the preparation of mixturesthereof : en
  • CA353950A - Roll towel fixture : en fr
  • US2020039A - Horologe system : en
  • GB437878A - Wall connector for scaffolding girders : en
  • CA353997A - Typewriter : en fr
  • GB437752A - Improvements relating to emulsifiers : en
  • GB437816A - Improvements in frames or surrounds for doors, windows and like structures : en
  • US2019702A - Duplicating machine : en
  • US2019805A - Mechanism for feeding and inking typewriter ribbons : en
  • US2020264A - Smokeless boiler : en
  • CA354010A - Safety razor : en fr
  • US2019685A - Portable receptacle : en
  • DE621368C - Spring contact with contact carbon, in which the carbon is held in place on the spring tongue by overlapping stapling members : de en
  • CA353913A - Photographic emulsion : en fr
  • FR789881A - Process to increase the resistance of wood : en fr
  • GB437762A - Improvements in or relating to couplings for tubes and the like : en
  • GB437934A - Improved hydrocarbon compositions : en
  • GB437951A - Improvements in the manufacture and production of azo dyestuffs : en
  • USD97400S - Design fob a bottle : en
  • GR5493B - GAME BY COMMUNICATION. : el en
  • GB438128A - Improvements relating to exercising apparatus : en
  • GB437926A - Improvements in or relating to electromagnetic sound recording systems : en
  • DE621548C - Device for edging sheet metal, especially on the roof : de en
  • DE621308C - Device for removing the shape of the foot sole loaded with the body for the production of orthopedic shoe insoles : de en
  • DE621320C - Free-flight piston machine with counter-rotating masses : de en
  • FR789689A - Diffusing glass for vehicle headlights : en fr
  • DE621570C - Device for connecting synchronous machine sets in parallel : de en
  • DE621582C - Process for the preparation of a monooxychrysenic : de en
  • US2019623A - Drum winding apparatus for threads : en
  • US2020242A - Swivel head tool : en
  • FR789838A - Advanced Thread Thrower : en fr
  • DE621561C - Shock absorbers for doors, windows or the like with a body made of rubber or the like. : de en
  • FR789722A - Process for manufacturing real wood wall cladding : en fr
  • US2019946A - Process and apparatus for the manufacture of envelopes, bags, and similar articles : en
  • FR789791A - Method and device for bringing water to a pipe, the temperature and volume of which vary according to the needs of consumption : en fr
  • DE621482C - Method of using square wood for three-legged wooden towers and wooden masts : de en
  • FR789898A - Device for automatically starting an auxiliary plant for the production of motive power combined with a motive power network and comprising an internal combustion engine : en fr
  • GB438420A - Improvements in or relating to the production of compounds of the cyanine type : en
  • GB437728A - Improvements in and relating to electric discharge devices : en
  • US2020252A - Device for improving the use of vacuum in the bleeding of animals : en
  • FR789872A - Railway signaling device : en fr
  • US2019633A - Vapor electric device : en
  • US2019924A - Detachable elastic waistband : en
  • US2020247A - Cellulose acetate composition and plasticizer therefor : en
  • US2020037A - Safety shoe : en
  • USD97373S - Design for a jar or similar : en
  • USD97403S - Design for a building : en
  • USD97397S - Design for a combined waffle : en
  • GB437703A - Improvements in or relating to the starting of internal combustion engines of the liquid fuel injection type : en
  • FR789870A - Process for merging several sound recordings and device for implementing this process : en fr
  • FR789811A - New process for cooking starch, with a view to its transformation into a colloidal solution : en fr
  • GB437998A - Crankshaft particularly adapted to resist great strain, for internal combustion engines, (diesel), steam engines and the like : en
  • CA353957A - Engine fuel stabilization : en fr
  • CA353999A - Electric clock : en fr
  • US2019667A - Rotatable admission and cut-off valve : en
  • US2020225A - Resetting device for registers : en
  • DE621586C - Process for the production of storage-stable mixed fertilizers containing nitrogen, phosphoric acid and optionally potash : de en
  • US2019607A - Automatic ball return for bowling alleys : en
  • US2019758A - Art of preparing wax emulsions : en
  • US2019862A - Switch box : en
  • US2019847A - Start-stop telegraph system : en
  • US2020207A - Chair : en
  • GB437652A - Improvements in or relating to the production of potassium sulphate : en
  • GB437795A - Improvements in and relating to self-filling fountain pens : en
  • US2019992A - Insulator rack : en
  • DE621318C - Self-seller for gas, water or electricity with a device for collecting a basic fee : de en
  • FR789716A - Steering wheel : en fr
  • US2020035A - Doorlatch : en
  • US2020178A - Method of and apparatus for the manufacture of safety glass : en
  • DE621338C - Safety razor : de en
  • FR789817A - Voltage regulator in rail ovens for wafers : en fr
  • US2019887A - Mechanical scorer : en
  • US2019935A - Rail bond terminal : en
  • GB437766A - Improvements relating to electric selective systems : en
  • FR789823A - Isostatic hobs : en fr
  • IE13517L - Bale ties or bands : en
  • US2019636A - Collapsible container : en
  • US2019747A - Valve : en
  • USD97441S - Design for a composite container : en
  • FR789766A - Device for preventing the wheeling of vehicles with an electric motor suspended by the nose : en fr
  • GB437953A - Process for the manufacture of acridine derivatives : en
  • DE621267C - Secondary light source for optical sound recording : de en
  • GB437662A - Improvements in production of articles from plastic compositions containing vinyl resins : en
  • GB437697A - Method of manufacturing fibrous cement tubes provided with integral end sockets : en
  • FR789985A - Assembly and electronic discharge lamp for producing a beat frequency : en fr
  • GB437980A - Improvements relating to lubricant pumps for metal cutting machines : en
  • FR789936A - Improvements to ozonators : en fr
  • GB437717A - Improvements in the preparation of synthetic lacquer : en
  • GB438013A - Improvements in percussive rock drilling machines : en
  • FR789874A - Waterproof fabric for liquids and gases with high elasticity and high tensile strength : en fr
  • DE628243C - Method for operating asynchronous reactive power machines : de en
  • USD97412S - Design for a bucbxe : en
  • DE620956C - Liquid shock absorbers, especially for aircraft : de en
  • US2019773A - Orthodontic appliance : en
  • FR789681A - Device for adjusting the gas flow rate, particularly applicable to liquid heaters : en fr
  • US2019532A - Electrical connecter plug : en
  • US2019562A - Automobile bell housing support : en
  • US2019576A - Apparatus for pack annealing : en
  • US2019918A - Apparatus for ejecting fluids under pressure : en
  • DE621366C - : de en
  • GB437778A - An improved method of waterproofing textile fabrics : en
  • DE620931C - Vertical chamber or retort furnace for coke and gas production : de en
  • DE621342C - Roller cover for conveyor drums : de en
  • DE621457C - Seal for centrifugal machines, especially steam turbines : de en
  • DE621519C - Multi-limbed single-phase inductor (transformer) with direct current bias : de en
  • DE621554C - Process for heating and pumping liquid fuel into a pressure vessel : de en
  • GB437928A - Improvements in or relating to the manufacture of rubber compositions from rubber latex : en
  • GB437962A - Improvements relating to the construction of motor vehicle bodies : en
  • FR789767A - Aerial or submarine sounding device : en fr
  • GB437929A - Improvements in and relating to multiple-shade holders : en
  • DE621523C - Process for the production of homogenized ceramic mass or of ceramic bodies from homogenized mass : de en
  • CA353889A - Folding seat : en fr
  • CA353899A - Prepayment meter : en fr
  • US2019755A - Rotary machine torque indicator and shock absorber : en
  • FR789885A - Valve device for an arc extinguishing switch by a gaseous or vapor extinguishing fluid : en fr
  • US2020056A - Automatic control for paper machine driers : en
  • USD97415S - Design for a textile fabric : en
  • FR789649A - Control device for a centrifugal apparatus, in particular an artificial silk spinning pot : en fr
  • FR789650A - Multi-layer broom : en fr
  • FR789900A - Radio receiver with amplifiers h. f. multiple : en fr
  • FR789976A - Process for increasing the viscosity of tars : en fr
  • DE620837C - Process for the production of colored lakes of the anthraquinone series : de en
  • DE621500C - Rubber tread : de en
  • DE621278C - Knitting machine drive : de en
  • DE621241C - Connector for potentially explosive rooms : de en
  • DE592820C - Printing device with an optical auxiliary device : de en
  • US2019825A - Crown throat : en
  • CA353907A - Locomotive : en fr
  • GB437930A - Improvements in fuel supply systems for internal combustion engines : en
  • GB437774A - Improvements in view-taking apparatus with two or more photographic cameras : en
  • FR789746A - Removable fixing device for jet breakers and flexible pipes : en fr
  • FR789718A - Further training in the supply of vacuum devices attached to an explosion engine : en fr
  • US2019487A - Feed regulator for machine tools : en
  • US2020050A - Carding machine : en
  • GB437806A - Improvements in processes for the production of steel and iron alloys : en
  • US2019836A - Glow plug for internal combustion engines : en
  • FR790000A - Electrically operated sharpening or grinding device : en fr
  • DE621317C - Arithmetic teaching aids : de en
  • DE621372C - Cooker with electrically heated hotplates : de en
  • DE621480C - Slip rings for power take-off on the Koenigstock of slewing cranes and the like like : de en
  • GB438126A - Improvements in or relating to therapeutic compounds and processes of producing them : en
  • GB438196A - Process for obtaining krypton and xenon : en
  • US2020122A - Sealing structure : en
  • DE621540C - Arc torch with two or more concentric carbon electrodes : de en
  • FR789858A - Radio-receiver with variable selectivity : en fr
  • GB437866A - Belt fastener for round belts : en
  • FR789751A - Artificial schappe spinning process : en fr
  • GB438591A - Improvements in the production of crepe threads and fabrics : en
  • DE621158C - Card punching machine for column-by-column punching of cards : de en
  • US2020061A - Indicator : en
  • US2019591A - Synthetic resin product and process : en
  • DE620874C - Revolving lid clutter with automatic lid cleaning : de en
  • DE621301C - Electrically heatable heating or cooking device with predominantly radiant heating : de en
  • GB438197A - Improvements in or relating to electric motor controllers : en
  • US2019489A - Sponge rubber and method of manufacturing the same : en
  • US2019592A - Railway car truck : en
  • FR789771A - Textile fabric, its production process and its applications, in particular in the manufacture of belts : en fr
  • FR789962A - Manufacturing process of mono or multitubular monolithic bodies or elements in reinforced concrete or not : en fr
  • GB437773A - New or improved process for the polymerziation of vinyl compounds : en
  • GB437975A - Improvements in buffers for doors : en
  • DE621303C - Feeding device for gas generators : de en
  • DE621328C - Endless mold conveyor for chocolate pouring machines : de en
  • DE621539C - Salt bath furnace used for the heat treatment of metals, especially for hardening : de en
  • DE620958C - Steel band set with locking ring for air chamber tires : de en
  • USPP145P - Azalea : en
  • US2019595A - Apparatus for making case hardened glass : en
  • US2020118A - Paper reeling apparatus : en
  • DE621277C - Process for the production of light footwear by the gluing process and footwear produced by this process : de en
  • DE621606C - Egg divider : de en
  • GB437666A - Improvements in or relating to feeding devices for fuel or granular materials : en
  • US2020126A - Wireless receiver : en
  • DE621265C - Household cookware : de en
  • CA353910A - Juice extractor : en fr
  • US2020238A - Level : en
  • US2019780A - Electric heating unit : en
  • US2020042A - Roll forming machine : en
  • CA353976A - Insulator bushing electrostatic field control : en fr
  • US2019550A - Apparatus for visual training : en
  • DE621358C - Device for the production of helically wound pipes : de en
  • US2019849A - Transmission : en
  • US2019868A - Electric conductor : en
  • US2019735A - Focusing objective : en
  • US2019751A - Weighing scale : en
  • US2020098A - Water feed system for lime hydrators : en
  • FR789616A - Manufacture of developers for fine-grained development of silver halide emulsions : en fr
  • US2019665A - Process of producing tetraphosphates : en
  • CA354001A - Brake : en fr
  • FR789690A - Aviation engine power supply process : en fr
  • AU1995634A - Means for lining, paving and revetting water washed surfaces and method of making said means : en
  • US2020181A - Hydrant : en
  • FR789763A - Milk filter : en fr
  • FR789864A - Ski equipped with a padding preventing slipping back : en fr
  • FR789937A - Cleaning device for dust filters : en fr
  • US2019766A - Control device : en
  • USD97406S - Design for a building : en
  • US2019916A - Vending machine : en
  • USD97376S - Design for a combined switch knob : en
  • FR789640A - Manufacture of developers for silver halide emulsions : en fr
  • CA353894A - Securing device for drawings, etc. : en fr
  • FR789965A - Method of joining blocks or glass construction elements : en fr
  • GB437671A - Improvements in or relating to thermionic oscillation generators : en
  • CA353931A - Refractory composition : en fr
  • CA353943A - Cigarette manufacture : en fr
  • CA353978A - Ultra short wave radio receiver : en fr
  • CA354022A - Cotton fibre immunization : en fr
  • FR789792A - Method and apparatus for obtaining white sea salt : en fr
  • US2019772A - Method for treating mineral oil distillates : en
  • US2020047A - Method for burning liquid fuel : en
  • US2019476A - Temperature controlling means for internal combustion engines : en
  • US2020078A - Magneto generator : en
  • DE620521C - Railway wheel axle with braking device arranged in the interior of the wheels, especially for rapid transit cars : de en
  • DE621594C - Electromotive drive device for work machines : de en
  • DE621569C - Circuit arrangement for dialers in telephone systems, over which lines of different traffic directions can be reached : de en
  • DE621588C - Process for the production of end closures with conical winding cones for electrical high-voltage cables : de en
  • US2020046A - Detention window assembly : en
  • US2019752A - Clutch control mechanism : en
  • DE620827C - Driving shield for tunnel construction : de en
  • DE621324C - Scraper-like hand tool for deburring drilled or punched holes on the exit side of the punching tool : de en
  • US2019775A - Process for producing soap : en
  • US2020267A - Antianemic substance and process of making it : en
  • GB437678A - Improvements in the thermal treatment of carbonaceous substances : en
  • GB437702A - Process and apparatus for the pneumatic separation of materials comprising elements of different specific weight : en
  • US2019684A - Structural steel connection : en
  • US2019841A - Process of sealing containers : en
  • USD97435S - Design for a curtain fabric : en
  • FR789641A - Process for treating natural gums and products obtained : en fr
  • GB437832A - Improvements in and relating to piston engines with self-lubricating packing rings : en
  • DE621377C - Seeding machine with periodically moved up and down seed container : de en
  • FR789871A - economizers for boilers : en fr
  • FR789970A - Process for transforming magnesium dust into compact metallic magnesium : en fr
  • US2019753A - Tripod leg construction : en
  • US2019560A - Towel stacker : en
  • US2019691A - Clasp : en
  • CA354017A - Lamp : en fr
  • CA354003A - Tire bead making apparatus : en fr
  • FR789967A - Winder : en fr
  • DE621287C - Drilling table drive for deep drilling : de en
  • GB437827A - Improvements in or relating to net-making machines : en
  • FR789713A - Method and means for molding pipes, conduits or the like : en fr
  • FR789759A - Double safety valve, in particular for the petrol supply of automobile engines : en fr
  • CA353994A - Gas desulphurizing process : en fr
  • GB437818A - Improvements in liquid fuel burners : en
  • FR789880A - Improvements to sidecars : en fr
  • FR789873A - Elastically oscillating barrel terminal : en fr
  • US2019700A - Woven fabric conveyer and like band : en
  • DE620892C - Collecting cylinder : de en
  • GB437892A - Improved apparatus for the extraction of liquid from material such as sludge or slurry : en
  • US2019823A - Storage battery box : en
  • US2019596A - Acoustic signaling apparatus : en
  • US2019674A - Vehicle door pocket : en
  • US2019951A - Decorative material : en
  • US2020191A - Hat : en
  • DK50848C - Pig mark and pliers for attachment of the same. : da en
  • FR789963A - glass building elements and their manufacturing process : en fr
  • US2020142A - Electric cigar lighter : en
  • US2019616A - Sound recording system : en
  • US2019837A - Chloro-benzoylamino-anthraquinone : en
  • DE621031C - Control device for piston pumps with radially adjustable stroke, especially for fluid gears of motor vehicles : de en
  • US2020255A - Protective coatings and process of applying and removing : en
  • US2019748A - Photographic printing apparatus : en
  • US2019481A - High frequency modulation system : en
  • US2019872A - Alkylenediguanidine salts and process of making said salts : en
  • US2019929A - Apparatus for making cards : en
  • DE621244C - Thread turning device for flat weft knitting machines : de en
  • FR789921A - Process to prevent pitting in electrolyte deposits : en fr
  • DE621282C - Process for influencing the chemical and physical properties of the blast furnace slag : de en
  • GB438120A - Improvements in hydraulic braking and lifting apparatus for vehicles : en
  • DE621430C - Fastening of cylinder locks to ordinary mortise locks : de en
  • DE621453C - Process for separating gas mixtures, such as coke oven gas : de en
  • FR789983A - Improvement to milk bottles and others ... comprising a metal frame with an oscillating arch to be used for their transport, or without it : en fr
  • CA353876A - Container closure : en fr
  • DE621294C - Electromotive single drive for dialers in telecommunication, especially telephone systems : de en
  • DE621326C - Process for making margarine : de en
  • GB438001A - Improvements in eye testing method and apparatus therefor : en
  • DE621373C - Machine for grinding wood turned parts : de en
  • DE621458C - Die holder with a clamping device for the dies, in which the width of the setting space is larger than the relevant part of the dies to be set : de en
  • FR789947A - Process for preparing organic vinyl sulfoxides and sulfones : en fr
  • DE621262C - Device for achieving an arbitrarily controllable exchange of power between two AC networks of the same or different frequency : de en
  • DE621275C - Lock whose tumblers are classified by a double-bit key : de en
  • FR789841A - Improvement in combustion engine carburettors : en fr
  • USD97381S - Design for a hat : en
  • FR789998A - Manufacturing process of ladders and resulting industrial products : en fr
  • US2019626A - Coloration of textile materials : en
  • GB437646A - Improvements in or relating to telegraph systems : en
  • GB438024A - Improvements relating to plug valves : en
  • DE621365C - Arrangement to achieve an even load distribution on several gearboxes connected in parallel : de en
  • FR789657A - Manufacturing process for molded objects : en fr
  • GB437861A - Improvements in or relating to caging devices for gyro verticals : en
  • US2019808A - Detoxified pollen extract : en
  • USD97396S - Design for a toaster casing : en
  • USD97374S - Design for a combined match cluster : en
  • DE621257C - Receiver with loudspeaker : de en
  • DE621452C - Process for the production of water-insoluble azo dyes on the fiber : de en
  • DE621463C - Cascade push-pull amplifier in ª ‰ circuit : de en
  • DE621252C - Process for smoldering fine-grained or small-sized fuels : de en
  • CA353941A - Cellulose ester : en fr
  • DE621441C - Process for the production of pure colored pottery : de en
  • CA353909A - Gas turbine system : en fr
  • DE621006C - Rotatable boom, especially for catenary lines for electric railways : de en
  • GB437744A - Improvements in or relating to alloys : en
  • CA353917A - Bottle capping machine : en fr
  • CA353867A - Lumber : en fr
  • DE621575C - Storm lantern with wick burner : de en
  • GB437948A - Improvements relating to electric secondary batteries : en
  • GR5497B - CONVERSION OF LIGNITE TO NITROGEN FERTILIZER. : el en
  • GB437943A - Improvements in or relating to crepe threads and fabrics containing artificial filaments : en
  • US2020209A - Metal container : en
  • AU1860234A - Improvements inthe manufacture of fuel : en
  • GB437984A - Improvements in or relating to handle-bars for motor cycles and the like : en
  • USD97447S - Design for an antenna for : en
  • US2019536A - Process and apparatus for producing finely divided lead and lead compounds : en
  • US2019657A - Internal combustion engine : en
  • US2020053A - Curtain ring adjuster : en
  • US2019802A - Jacket for carbon paper : en
  • AU2006634A - Improvements in and relating to navigational systems : en
  • FR789719A - Safety crutch for car doors : en fr
  • FR789800A - Improvement brought to symbolic tables to represent the functioning of installations, mechanisms, etc. : en fr
  • US2019486A - Hydraulically propelled machine tool : en
  • US2019717A - Clock : en
  • US2019827A - Spinning centrifugal motor arrangement : en
  • CA353958A - Feeding apparatus for starch tables : en fr
  • CA353991A - Base-exchange material preparation : en fr
  • CA353965A - Railway card holder : en fr
  • USD97419S - Design for a clock : en
  • CA353872A - Oil burner : en fr
  • GB437833A - Improvements in or relating to the manufacture of phosphoric acid-containing fertilisers : en
  • FR789724A - Aeroplane or hydroplane for heavy loads, with two airplanes coupled and detachable during the flight : en fr
  • DE621444C - Process for filling molding or core boxes using compressed air : de en
  • DE621535C - High-voltage switch with spring force storage drive for switching on and off : de en
  • CA353964A - Spare tire cover : en fr
  • DE621445C - Window pillar for vehicles : de en
  • US2019861A - Pneumatic dispatch system : en
  • US2019932A - Folding leg table : en
  • US2019588A - Refrigerating apparatus : en
  • US2019905A - Stereotype metal pump : en
  • DE621421C - Switching device for steam jet pumps (injectors) : de en
  • FR789601A - Process of local softening of a steel part, hardened by quenching and product obtained : en fr
  • CA353898A - Electrical cooking appliance : en fr
  • DE621233C - Swing axle suspension for vehicles, especially for gun mounts : de en
  • CA353886A - Lignin derivative manufacture : en fr
  • US2019835A - Catamenial bandage : en
  • US2020085A - Brush molding composition and process of making the same : en
  • CA353933A - Cement for abrasive articles : en fr
  • US2019597A - Repeater : en
  • US2020073A - Fair lead pulley : en
  • US2020076A - Process for the production of chlorinated rubber : en
  • US2020197A - Knitting device and method of knitting : en
  • DE620764C - Driving shield for the creation of tunnels or galleries in soft or water-bearing soil : de en
  • DE621528C - Folder for cards arranged in a staggered manner with compartments forming sheets bound in the folder back : de en
  • USD97384S - Design fob lace : en
  • US2019940A - Yarn feeding means : en
  • USRE19746E - Quotation projecting ob similar : en
  • GB438271A - Process for making bis-beta-dichloroalkyl ethers : en
  • CA353979A - Portable talking motion picture apparatus : en fr
  • US2020172A - Method of treating articles of wood such as spools and bobbins : en
  • US2019622A - Mechanical basing machine : en
  • US2020088A - Universal swiveled coupling for electrical conductors : en
  • DK50856C - Coupling to the paper cart on typewriters. : da en
  • CA353953A - Advertising display sign : en fr
  • DE621531C - Valve control device for steam turbines : de en
  • GB437696A - Improvements in or relating to overhead conveyors : en
  • US2019800A - R seybold : en
  • US2019949A - Egg tray rack : en
  • FR789665A - Air carrier with intermediate station : en fr
  • USD97408S - Design for a button : en
  • DE621336C - A pouring tube designed as a piercer for metal bottles : de en
  • FR789782A - Multiple rotary machine : en fr
  • FR789865A - Individual vehicle axle control device : en fr
  • GB437864A - Process of manufacturing refined hydrocarbons and hydrocarbon mixtures : en
  • DE621327C - Process for making margarine : de en
  • USD97434S - Design for a curtain fabric : en
  • FR789688A - Rolling table for projection devices, and others : en fr
  • FR789862A - Mixing agents for lubricants, and manufacturing processes : en fr
  • DE621160C - Self-seller with several sales outlets : de en
  • DE621568C - Railway carriages cooled with solid carbonic acid : de en
  • FR789604A - Device for checking spark plugs : en fr
  • DE621485C - Electric starting device for internal combustion engines : de en
  • DK50846C - Household roll. : da en
  • DE621403C - Device for controlling electric motors, in particular for adjusting motors in roller lines : de en
  • USD97422S - Design for a wringer : en
  • FR789813A - Aerodynamic silencer exhaust for airplanes, airplanes, canoes, motor cars, motorcycles and all devices powered by internal combustion engine and driven at a certain travel speed : en fr
  • GB437719A - Improvements in and relating to binding materials, in particular hydraulic binding materials : en
  • DE621446C - Process for the production of concrete moldings : de en
  • FR789827A - Screws or bolts or the like having several cross sections of different sizes and method of manufacture thereof : en fr
  • GB437720A - Improvements in or relating to the mechanical recording of oscillations, particularly sound oscillations, on a carrier : en
  • DE621508C - Method for bricking open fires : de en
  • GB437758A - Improvements in and relating to the concentration of latex : en
  • GB437829A - Improvements in and relating to logs for measuring the distance travelled by water-borne vessels : en
  • GB437919A - Seal of guarantee for string, ribbon or analogous objects used for the closing of packages, such as sacks and cases : en
  • US2019822A - Loom heddle and method of making the same : en
  • US2020200A - Power generating apparatus : en
  • US2019997A - Circuit controller : en
  • FR789961A - Room scale for people : en fr
  • FR789969A - Manufacturing process of a hard metal alloy for tools and work implements : en fr
  • DE621311C - Machine for drilling buttons with natural eyelets (Butzenknoepfe) : de en
  • FR789634A - Elastic suspension for motorcycle sidecars : en fr
  • GB437656A - Improved scanning apparatus for television and the like : en
  • GB437979A - A device for testing the specific gravity of gases : en
  • FR789913A - Rear wheel suspension system for motor vehicles, trailers or semi-trailers, with combined braking device : en fr
  • DE621281C - Installation toggle switch with reduced switching noise : de en
  • DE621085C - Stroboscope for subjective observation of fast-moving processes : de en
  • DE621484C - Device for playing back sound recordings : de en
  • FR789764A - Improvements to catalytic stoves : en fr
  • GB437765A - Improvements in or relating to portable or sectional structures applicable for greenhouses and the like : en
  • GB437841A - Improvements in and relating to cases for watch and clock movements : en
  • US2019987A - Tire cover : en
  • FR789651A - Display device for textiles or other applications : en fr
  • GB437947A - Improvements in or relating to electrical storage batteries : en
  • FR789941A - Matches : en fr
  • GB437661A - Improvements in articles comprising plastic compositions containing vinyl resins andprocess of making the same : en
  • US2020213A - Switch : en
  • GB438116A - Improvements in the manufacture of tires : en
  • FR789842A - Rim for motor vehicle wheels and the like : en fr
  • FR789839A - Automatic regulation system taking into account the inertia of the installation and that of the regulation devices : en fr
  • GB437868A - Improvements in flash-light lamps : en
  • GB437879A - Improvements in machines for producing justified lines of printing types : en
  • GB437711A - Improvements in chain gearing : en
  • US2019703A - Duplicating machine : en
  • US2019543A - Apparatus for forming threads or filaments from aqueous dispersions of rubber or the like : en
  • US2019869A - Perforated record controlled machine : en
  • US2020112A - Liquid dispensing system : en
  • GB437893A - Improvements in machine for grading eggs : en
  • US2020115A - Treatment of petroleum hydrocarbons : en
  • FR789659A - Spectacle lens capable of being heated and method of making the same : en fr
  • DE620957C - Belt lock, especially for parachute connection belt : de en
  • FR789988A - Improvements to bits and bit holders and similar tools in general : en fr
  • GB438192A - Manufacture and application of improved pigment preparations : en
  • US2019791A - Die, die holder, and ejector : en
  • US2019936A - Chaxchj c c : en
  • US2020036A - Photographic shutter : en
  • USD97387S - Design for a blouse : en
  • US2019617A - Mechanism for actuating a friction clutch : en
  • DE621202C - Electric locomotive : de en
  • US2019551A - Refrigerating system : en
  • US2019727A - Method of converting rough metal into molded parts : en
  • US2019722A - Holder carrier and storage case : en
  • US2019764A - Photographic apparatus : en
  • US2019888A - Vulcanizing press : en
  • US2020199A - Device for stretching skins : en
  • FR789899A - Clutch control mechanism for motor vehicles : en fr
  • DE621237C - Outlet for grain silos or the like. : de en
  • DE621340C - Process for the production of hydrosilicate-bound molded articles : de en
  • FR789907A - Advanced bearing : en fr
  • US2019715A - Multisection tire cover : en
  • GB438014A - Radio receiver or the like with manual volume control : en
  • DE621314C - Screw gauge (micrometer) : de en
  • DE621307C - Protective cover of starter cables for gliders : de en
  • FR789668A - Mechanical device establishing a no-fire zone applicable to aircraft defense devices : en fr
  • FR789758A - Improvements to welding processes : en fr
  • US2020134A - Internal gauge : en
  • DE621566C - Method for obtaining yeast while stirring the fermenting liquid : de en
  • GB437654A - Improvements in electric signalling systems particularly for train describing purposes : en
  • GB437897A - Improvements relating to magnetic separators : en
  • US2020068A - Method of and apparatus for feeding signature handling machines : en
  • GB438018A - Improvements in or relating to modulated high frequency circuit arrangements : en
  • GB438127A - Improvements in or relating to combustion control in steam generator or other furnaces : en
  • GB437722A - An improved ear-protector : en
  • DE621477C - Slide for gas ducts, especially smoke ducts : de en
  • GB438272A - Machine for the production, by chemical means, of explanatory titles for the pictures on cinematographic films : en
  • DE621074C - Stepping mechanism for controller load-dependent regulated electric motors : de en
  • DE621288C - Process for the production of reinforced concrete containers with protective coatings on the inner wall : de en
  • DK50869C - Adjustable Fuel Injector for Internal Combustion Engines. : da en
  • DE621364C - Fridge : de en
  • US2019721A - Controlling mechanism for stemming machines : en
  • USD97427S - Design for a sewing cabinet : en
  • FR789776A - Activated carbon manufacturing process : en fr
  • US2019581A - Book supporting apparatus : en
  • US2019554A - Production of alumina : en
  • US2019602A - Shockproof x-ray unit window : en
  • US2019666A - Method of obtaining tetraphosphates : en
  • US2019839A - Leer : en
  • US2019912A - Oscillating furnace : en
  • US2020026A - Automatic underfeed furnace : en
  • DE621513C - Process for the separation of dissolved volatile substances : de en
  • US2019990A - Machine for making crate sides : en
  • DK50855C - Razor. : da en
  • FR789801A - Method for the direct mounting of current transformers on the primary conductor : en fr
  • GB437750A - Apparatus for controlling the flow of gas, electricity or liquid : en
  • GB437974A - Improvements relating to socket elements for anti-rattle buffer devices for doors : en
  • DE621549C - Box locking device, especially in large garages : de en
  • GB437971A - An alarm clock for bakers' ovens : en
  • DE621293C - Line ejection device for line casting machines with subdivided ejectors, the parts of which can form ejectors of different widths by adjusting a coupling member : de en
  • FR789807A - Absorption refrigerating apparatus, intermittent operation, and method of operation therefor : en fr
  • AU1993934A - Improvements in electrical storage batteries : en
  • US2019515A - Hydrant drain valve : en
  • US2019953A - Crayon box or package : en
  • CA353972A - Strain insulator : en fr
  • US2019725A - Individual wheel suspension : en
  • US2019778A - Package container : en
  • US2019749A - Die for cutting collars or the like : en
  • FR789909A - Azo dyes manufacturing process : en fr
  • US2020193A - Golf club measuring device : en
  • US2019833A - Occupant propelled vehicle : en
  • US2019908A - Method of plugging strata in wells : en
  • US2019642A - Portable washbowl : en
  • USD97443S - Design for a trailer : en
  • US2019826A - Display stand : en
  • US2020174A - Vehicle hoist frame : en
  • DE606830C - Removable propeller : de en
  • FR789850A - Production of water-insoluble azo dyes : en fr
  • FR789883A - Improvements to electroplating processes and resulting products : en fr
  • FR789773A - Improvements to electromagnets and in particular to those supplied with alternating current : en fr
  • US2019926A - Distributor head for pneumatic conveyers : en
  • DE621259C - Device for the rapid de-energization of DC machines by means of a short circuit : de en
  • US2019565A - Duplex package : en
  • US2020021A - Extreme pressure lubricating composition : en
  • DE621360C - Process for the production of clear condensation products from formaldehyde, urea and thiourea : de en
  • US2020040A - Power transmitting mechanism : en
  • US2020074A - Service tray for automobiles : en
  • GB437694A - Improvements in or relating to infusers for tea, coffee and the like : en
  • US2019609A - Manufacture of artificial materials : en
  • US2019850A - Selenium containing anthraquinone compounds : en
  • US2019880A - Hydraulic transmission : en
  • USD97428S - Design fob a meat tenderer or suet : en
  • US2019590A - Pattern and method of preparing : en
  • US2019563A - Pad for pressing shoes : en
  • US2020064A - Heating system : en
  • US2019701A - Shingle : en
  • US2019768A - Electric clock : en
  • US2020032A - Glass working apparatus : en
  • US2020077A - Discharge vessel with subdivision of voltage : en
  • GB437894A - Improvements in or relating to resinous compositions : en
  • US2019913A - Heating device : en
  • US2019995A - Display container : en
  • FR789708A - Sun visors for cars : en fr
  • US2019624A - Attenuation equalizer : en
  • US2019796A - Portable car cooler : en
  • US2019906A - Fan : en
  • US2020183A - Heating system and element thereof : en
  • USD97416S - Design for a textile fabric : en
  • CA353897A - Electric cooking utensil : en fr
  • DE621271C - Device for adjusting the top jaws on lathe chucks : de en
  • US2019498A - Method and attachment to photographic enlarging machines for making pictures : en
  • US2019975A - Means for spreading or removing materials : en
  • US2019706A - Door closure : en
  • US2019804A - Hydrant drain valve : en
  • US2019863A - Tabulating machine : en
  • US2019871A - Continuous oxygen recorder : en
  • US2020012A - Liquid meter : en
  • US2019606A - Superheater recirculator : en
  • DE621370C - Protective device on step presses : de en
  • FR789680A - Method and means for cleaning carpets and other products of a textile nature : en fr
  • FR789706A - Electric discharge tube : en fr
  • FR789860A - Safety device, in particular for motor vehicles with engine control or internal combustion engines and mechanical or hydraulic transmission of motive power : en fr
  • FR789698A - Improvements made to means to compensate for the reactions exerted on aircraft controls : en fr
  • GB437886A - Improvements in or relating to the destruction of locusts or like insects : en
  • USD97431S - Design for a textile fabric : en
  • DE621479C - Drive device for the slide of motor flat knitting machines : de en
  • DE621543C - Hand deck device for flat knitting machines : de en
  • US2019728A - Unicycle : en
  • FR789610A - Improvements to automatic screwdrivers : en fr
  • GB437981A - Improvements in or relating to electrical control systems : en
  • FR789765A - Biological wastewater treatment device : en fr
  • US2019659A - Rock drill mounting : en
  • US2020220A - Battery post terminal clamp : en
  • FR789735A - Improvements to sliding sash windows : en fr
  • FR789924A - Mechanical pencil with several interchangeable leads : en fr
  • FR789982A - Automatic stabilizer device for aircraft : en fr
  • GB437989A - Apparatus for testing insulation and dielectric materials for capacitance and dielectric loss : en
  • FR789738A - Electrically operated Roman scale : en fr
  • GB437952A - Improvements in and relating to apparatus for electric telegraphy : en
  • US2020154A - Razor blade holder : en
  • US2019983A - Preparation of diketene : en
  • CA353959A - Parachute apparatus : en fr
  • US2019653A - Building block : en
  • US2019535A - Combination juice-extractor and beverage shaker : en
  • AU2237735A - Refrigerating apparatus : en
  • US2019598A - Production of cellulosic materials or cellulose : en
  • CA353891A - Engine mounting : en fr
  • CA353963A - Spare tire cover : en fr
  • US2020094A - Detention window assembly : en
  • DE621560C - Guide device for bicycles : de en
  • US2019575A - Air conditioner : en
  • CA353916A - Container cap : en fr
  • US2020216A - Portable work equipment holder and supporting structure : en
  • US2019490A - Cyanamide resin : en
  • US2019506A - Doorlock : en
  • US2019834A - Production of plywood and other joined wooden articles : en
  • FR789915A - Braking device for motor cars and other vehicles incorporating pneumatically actuated brakes : en fr
  • US2019694A - Nozzle for the expansion of hot liquids : en
  • US2019524A - Brake : en
  • FR789783A - Improvements to roller chains for power transmission : en fr
  • FR789990A - Potato masher : en fr
  • GB437999A - Improvements in or relating to fuel-injecting internal combustion engines : en
  • DE621426C - Compressed air indicator for vehicle tires : de en
  • US2019713A - Fertilizer and process for the production of the same : en
  • US2020096A - Refrigeration apparatus : en
  • US2020055A - Electric lamp : en
  • US2020179A - Tote box : en
  • US2020233A - Safety razor : en
  • US2020234A - Method of increasing the viscosity of gelatin : en
  • USD97433S - Design foe an ironing machine : en
  • DE621474C - Process for the production of dyes and intermediates : de en
  • GB437785A - Improvements in or relating to guards for seedlings and the like : en
  • US2019730A - Switch operating circuit with annunciator signals : en
  • DE621279C - Circuit arrangement for telephone systems with several exchanges, surge storage devices and automatic setting of directional switches : de en
  • US2019941A - Spray head : en
  • FR789797A - Improvements to construction processes, new construction elements and resulting structures : en fr
  • FR789816A - economizer for engines : en fr
  • US2019600A - Line focus cathode structure : en
  • US2019947A - Bed cover holder : en
  • CA353884A - Electric primary cell : en fr
  • DE621473C - Process for the production of metal-containing azo dyes : de en
  • US2019511A - Hoisting device : en
  • DE621470C - Equipment on electrical machines of large overall length to facilitate the thermal movement of their winding parts : de en
  • DE621538C - Electric headlight with several light sources, in particular with a two-filament lamp for motor vehicles and a device facing the light sources for displaying the light : de en
  • DE621381C - Roll film camera with format sliding screens : de en
  • GB437837A - Improvements in and relating to devices for controlling the flow of grain and like materials : en
  • GB437676A - Improvements in and relating to tobacco pipes : en
  • DE621537C - Collector converter with circumferential brushes placed in pockets : de en
  • US2020116A - Razor blade and holder therefor : en
  • FR789882A - Device used for osteosynthesis : en fr
  • FR789920A - Friction clutch for switching mechanisms : en fr
  • FR789997A - Rotary piston machine : en fr
  • FR789960A - Installation for dry extinguishing of incandescent coke : en fr
  • GB437904A - Improvements in or relating to methods of producing moisture proof tipped cigarettes : en
  • GB437761A - Improvements in and relating to electric supply meters : en
  • FR789889A - Airplane with lift propellers housed in the wings : en fr
  • US2019984A - Alloy : en
  • DE621585C - Control device : de en
  • US2019681A - Lip stick holder : en
  • US2019851A - Vertically movable door of the type used in freight sheds and roundhouses : en
  • CA353947A - Drying method and apparatus : en fr
  • GB437713A - Improvements in and relating to electric switch contacts : en
  • CA353993A - Wax recovery : en fr
  • DE621280C - Circuit arrangement for telecommunications, especially telephone systems : de en
  • DE621378C - Process for stabilizing whipped cream used in the manufacture of confectionery products : de en
  • DE621423C - Device for synchronizing two parts to be coupled with one another, especially for motor vehicle transmissions : de en
  • US2019477A - Typewriting machine : en
  • US2019651A - Wheeled toy : en
  • US2019919A - Fire hydrant : en
  • DE621418C - Workpiece holder for sewing machines for sewing perforated buttons : de en
  • US2019954A - Fabric pressing device of the sadiron type : en
  • CA354023A - Safety razor : en fr
  • CA353946A - Piston for liquid metering cylinders : en fr
  • CA353922A - Aggregate coating apparatus : en fr
  • US2020224A - Internal combustion engine : en
  • CA353955A - Dual wheel mounting : en fr
  • AU1988634A - Improvement in inter-carrier noise suppressor circuits : en
  • DE621226C - Wedge or parallel gate valve with movable shut-off plates and two-spindle lock : de en
  • US2019818A - Bakery machinery : en
  • US2020159A - Safety removable fastener slide : en
  • GB437693A - Improvements in or relating to wall constructions : en
  • GB437862A - Device for protecting against unexpected, sudden penetration of water into spaces ofall kinds, especially ships' holds : en
  • GB437969A - Improvements in and relating to security paper : en
  • US2019774A - Carriage support : en
  • USD97420S - Design for an atomizer : en
  • USD97395S - Design for a ring or similar article : en
  • DE621341C - Process for the production of hydrosilicate-bound molded bodies : de en
  • US2019793A - Dowel support : en
  • GB437840A - Improvements in or relating to glass cutting machines : en
  • US2019641A - Covered trim panel and method of manufacturing same : en
  • US2019777A - Braiding machine : en
  • US2020117A - Cutting, grinding, and burnishing tool and the production thereof : en
  • FR789897A - Improvements to typographic line casting machines : en fr
  • US2020033A - Glare shield : en
  • US2019740A - Container : en
  • US2019999A - Circuit controller : en
  • US2020265A - Ophthalmic mounting : en
  • US2019915A - Complex metal compounds of azo dyestuffs and their production : en
  • US2019630A - Fishing tackle : en
  • US2019797A - Amusement device : en
  • CA353983A - Plug fuse : en fr
  • CA353970A - Liquid meter : en fr
  • US2019920A - Process for the fibrous esterification of cellulose : en
  • US2019977A - Partition construction : en
  • US2020169A - Mining machine : en
  • CA353962A - Spare wheel assembly : en fr
  • US2019495A - Sound receiving apparatus : en
  • US2019690A - Toy stream lined railroad train : en
  • US2019903A - Manufacture of crinkled paper and the like : en
  • US2019583A - Air conditioner : en
  • US2019845A - Process and apparatus for making branded paper board and product thereof : en
  • FR789648A - Protection device for outgoing lines in electrical networks : en fr
  • GB437908A - Improvements in watering cans and the like : en
  • US2020161A - Trailer : en
  • DK50868C - Protection device at circular saws. : da en
  • FR789702A - Operating process for wireless lighthouses : en fr
  • US2020186A - Shipping basket : en
  • US2019779A - Floor drain : en
  • US2020062A - Structural building device : en
  • DE621409C - Device for measuring the degree of deformation of the rolling stock during rolling : de en
  • DE621533C - Control device for one machine or several machines : de en
  • US2019613A - Sodium vapor lamp : en
  • DE621386C - Tilting garage door : de en
  • GB438123A - Improvements in or relating to conveyors and conveyor systems in boot and shoe factories : en
  • US2019783A - Transmission mechanism : en
  • US2019810A - Frame construction system : en
  • US2020131A - Apparatus for shaking out chills and castings : en
  • DE621351C - Folding top for streamlined cars : de en
  • US2019488A - Purifying process for magnesium products : en
  • US2020090A - Electric motor : en
  • US2019527A - Balanced door : en
  • US2019537A - Art of printing containers : en
  • US2019500A - Article and method by which "ben day" tones are photographically produced : en
  • US2019555A - Electric heating and conditioning apparatus and method : en
  • US2019632A - Method of removing oxygen from gas mixtures : en
  • US2020268A - Price tag : en
  • US2020281A - Photo-electric color comparator : en
  • US2020075A - Combination temperature and pressure relief valve : en
  • US2019776A - Apparatus for producing soap : en
  • DE621416C - Violin holder adjustable in height and direction : de en
  • DE621439C - Automatic voltage regulator using a carbon column resistor : de en
  • GB437777A - Improvements in hat holders applicable to bottoms of seats : en
  • DE621319C - Arrangement of an external feeding cup for bird cages : de en
  • DE621572C - Fireless boiler for the continuous blowing of tar : de en
  • US2020052A - Battery terminal tool : en
  • US2019976A - Traffic control system : en
  • US2019881A - Wringer for washing machines : en
  • US2020000A - Circuit controller : en
  • FR789613A - Cigarette maker : en fr
  • GB437852A - Improvements in or relating to the treatment of fresh fruit, vegetable and similar juices : en
  • CA353881A - Crank and gear case cleaning apparatus : en fr
  • DE621564C - Device for plastering and grooving stoneware pipes : de en
  • US2020043A - Safety razor : en
  • USD97440S - Design fob a textile fabric : en
  • US2020111A - Detachable locking means for hypodermic syringe needles : en
  • USD97405S - Design for a building : en
  • US2019739A - Rotary machine : en
  • US2020182A - Method of making rubber shoes : en
  • GB437847A - Improvements in knitting machines : en
  • CA353893A - Napkin holder : en fr
  • US2019719A - Terrestrial excavation : en
  • US2019763A - Oil burner : en
  • US2020196A - Toy house : en
  • USD97383S - Design for a holder for jellies or : en
  • US2020212A - Method of making dynamic speakers : en
  • CA353981A - Magnetic core energizing method : en fr
  • US2019502A - Closure operator : en
  • USD97388S - Design for a blouse : en
  • US2019955A - Grease gun head and nozzle construction : en
  • US2020028A - Seating furniture back support : en
  • DE614583C - Verdol paper : de en
  • GB437808A - Improved method of and/or substance for producing paths, road surfaces, floorings and the like : en
  • US2019503A - Detector circuit : en
  • US2019811A - Tubular axle : en
  • US2020107A - Combination pessary and vaginal suppository : en
  • US2020109A - Preservation of fish by cold storage : en
  • USD97446S - Design for a toy train : en
  • US2019494A - Flavoring material and method of using same : en
  • US2020017A - Metallic grid : en
  • US2020218A - Apparatus for joining the ends of wires and the like by twisting them together : en
  • US2020223A - Typewriting machine : en
  • US2020081A - Hygrometer : en
  • US2020258A - Dynamo-electric machine : en
  • US2020187A - Mop : en
  • US2020206A - Securing trim panels : en
  • CA353998A - N-chloro-azo-dicarbonamidine production : en fr
  • DE621496C - Spring arrangement for storm poles : de en
  • DK50865C - Mowing tools for Grass and other Herbs. : da en
  • FR789912A - Dual-core motor or compressor : en fr
  • FR789740A - Tillage implement mounting device : en fr
  • GB437917A - Improvements in and relating to sheathing for electric cables : en
  • DE621261C - Brush holder with several adjacent individual brushes supported by springs on a common intermediate piece : de en
  • DE621437C - Circuit arrangement for telephone systems with dialer operation and production of preferred connections to other exchanges : de en
  • FR789691A - Dielectric materials and impregnating agents : en fr
  • FR789745A - Steering of variable-gear motor vehicles : en fr
  • USD97444S - Design for a knitted fabric or : en
  • AU4401664A - Improvements in or relating to opening machines : en
  • DK50861C - Hanger or loop-shaped furniture frame, in particular one made of steel pipe. : da en
  • FR789794A - Variable pitch propeller : en fr
  • US2020089A - Internal combustion rotary engine : en
  • DE600021C - Equipment of heating and cooking appliances : de en
  • DE621600C - Fast solidifying putty : de en
  • DK50853C - Composite Plate for Use in the Manufacture of Furniture and for Building Use, e.g. for Insulation against Heat and Moisture. : da en
  • FR789848A - Head filter nozzle, especially for water purifiers : en fr
  • US2019795A - Bullet sizer and greaser : en
  • US2019959A - Fishhook lure : en
  • US2019978A - Retractable core barrel : en
  • CA353971A - Insulator arcing guide : en fr
  • CA353973A - Insulator : en fr
  • DE621305C - Flat weft knitting machine with independently controlled lower deck and sample deck device : de en
  • DE621494C - Motion picture projector with cylinder lock : de en
  • FR789774A - Improvements to jacquard mechanics : en fr
  • GB437954A - Improvements in or relating to paving blocks or the like for roads, ways or the like : en
  • US2019692A - Portable dance floor or mat : en
  • DE621236C - Spinning or twisting machine in which the individual spindles are driven by friction disks : de en
  • GB437642A - Improvements relating to the processing or treatment of fabrics or textile fibres : en
  • DE621375C - Device for measuring the hysteresis on materials for material testing machines with changing loads and hydraulic force measurement : de en
  • CA353900A - Gasometer : en fr
  • GB437895A - Improvements in the treatment of solids : en
  • GB437684A - Improvements in or relating to folding mattresses and the like : en
  • GB437729A - Improvements in or relating to centrifugal fans : en
  • DE621507C - Wrapping device with wrapping cloth and changing table for cigars and cigarillos : de en
  • US2020173A - Combustion apparatus : en
  • US2020120A - Vacuum cleaner filter : en
  • FR789790A - Static ventilator for locomotive shelter : en fr
  • GB437802A - Improvements in sieve plates for pot presses : en
  • CA353870A - Tennis racket : en fr
  • GB437882A - An improvement in or relating to railway tipping wagons : en
  • US2019627A - Coloration of materials : en
  • FR789861A - Improvements to fasteners for automobile hoods and similar components : en fr
  • GB437958A - Improvements to tents : en
  • FR789978A - Blocks, pavers, bricks, etc., of wired glass : en fr
  • DE621361C - Template holder for typewriters : de en
  • US2019530A - Enolic ethereal salts derived from indanthrone : en
  • FR789833A - Injector for internal combustion engine : en fr
  • GB437793A - Improvements relating to steam generating and superheating installations : en
  • GB437645A - Improvements in carrier bags : en
  • DE621518C - Electrical pressure gas switch : de en
  • GB437914A - Improvements in or relating to indicators for displaying variable information : en
  • GB437949A - Improvements in and relating to the hardening of metal surfaces : en
  • FR789966A - Automatic crimping machine for parallelepiped boxes with sharp angles : en fr
  • GB437924A - Electric discharge tube for short wave use : en
  • FR789892A - Tool for capping bottles or similar containers : en fr
  • US2019567A - Hot water accumulator plant for locomotives : en
  • FR789979A - Rectifier system or electrical converter : en fr
  • GB437842A - Improvements in electrically heated hair drying apparatus : en
  • DE621461C - Compressors, especially for household refrigerators : de en
  • DK50866C - Device by Valves whose spindle is displaced under the influence of an eccentric. : da en
  • FR789656A - Improvements in cigarette collecting mechanisms for continuous tobacco rod type cigarette making machines : en fr
  • FR789825A - Compactor equipped with an electric lighting device : en fr
  • GB437675A - Manufacture of arylides from 4-hydroxydiphenyl-3-carboxylic acid and of azo-dyestuffs therefrom : en
  • FR789933A - Process for preparing oleum : en fr
  • GB437767A - Improvements in lawn mowers : en
  • GB437824A - Improvements relating to the manufacture of azo dyestuffs : en
  • FR789712A - Device simultaneously actuating several organs of any subject : en fr
  • GR5496B - NUMERICAL GAME OF SOCIETY. : el en
  • FR789618A - Manufacturing process for products intended for the preparation of consumer articles : en fr
  • FR789917A - Knife sharpening machine used to cut beets into chips : en fr
  • US2019697A - Exhaust silencer for internal combustion engines : en
  • DE621296C - Electrical switching device with rolling contacts : de en
  • IE13716L - Agricultural machinery : en
  • IE13810L - Railway traffic control. : en
  • DE621449C - Air supply and discharge device on rotating drying or germination drums with a closed outer jacket : de en
  • US2019982A - Individual wheel suspension : en
  • DE621329C - Device for holding an image, film or the like between two sheets of paper, one of which has an image section (image mask) : de en
  • DE621592C - Roller switch : de en
  • DK50864C - Electric Vacuum Cleaner. : da en
  • DE620864C - Device for creating a force system which is neutral with respect to elastic vibrations in ships or the like. : de en
  • FR789747A - Cremona : en fr
  • GB437860A - Improvements in and relating to sewing machines : en
  • FR789772A - Jewelry enhancements, such as pliers, or the like : en fr
  • GB437716A - Improvements in or relating to rollers for use on drag or trailing devices of trawl nets : en
  • GB437933A - Improvements in and relating to electric circuit interrupters : en
  • FR789958A - Steam separator valve for boilers : en fr
  • FR789908A - : fr
  • GB437857A - Improvements in water softening apparatus of the base-exchange type and in filters : en
  • GB437848A - Improvements in washing and wringing machines : en
  • US2020124A - Means of feeding webs of paper to printing presses : en
  • US2020143A - Glass feeder : en
  • FR789964A - Apparatus for the production of glass building elements : en fr
  • US2019584A - Vehicle wheel construction : en
  • US2019618A - Refractory ceramic : en
  • US2020202A - Cut-out switch : en
  • FR789679A - Safety razor : en fr
  • FR789637A - Improvements to form-mounting machines : en fr
  • US2019501A - Display apparatus : en
  • US2019552A - Individual cup for ice cream : en
  • US2019579A - Oil can : en
  • FR789631A - Method and apparatus for pleating thin bodies, and pleated articles of any cross-section obtained with said apparatus : en fr
  • FR789815A - Process for manufacturing products containing titanium and products obtained by applying said process : en fr
  • DE621428C - Crank drive for sledges of slicing machines : de en
  • DE621525C - Device for cleaning the endless steel belt of steel belt ovens that serves as a dough carrier : de en
  • GB437838A - Improvements in and relating to the weighing or checking the weight of cigarettes : en
  • US2019612A - X-ray tube and x-ray screen supporting structure : en
  • US2019985A - Lens : en
  • US2020015A - Electric cord plug : en
  • US2020151A - Fluid dispensing device : en
  • CA353929A - Metal vapour lamp lighting unit : en fr
  • DE621349C - Gate valve : de en
  • GB437907A - Improvements in or relating to the treatment of cellulose esters : en
  • US2019658A - Folding mechanism : en
  • US2019878A - Diaphragm spider : en
  • US2020273A - Lighting equipment : en
  • US2019534A - Doorlatch : en
  • FR789778A - Device for the control of remote weapons : en fr
  • DE621401C - Device for monitoring the filling and performance of a refrigeration system : de en
  • GB438017A - Improvements in and relating to direction indicators for motor vehicles and the like : en
  • CA353879A - Tobacco article production : en fr
  • US2019968A - Dredging apparatus : en
  • US2020276A - Electric heating and welding : en
  • US2019866A - Protective system for electric meters : en
  • DE621522C - Device for sound recording on magnetizable sound carriers : de en
  • FR789893A - Stretcher for sick or injured : en fr
  • DE621402C - Cooker for absorption apparatus : de en
  • GB437748A - An appliance for aiding the insertion of cotters and the like for poppet valves : en
  • FR789664A - Clip suitable for fixing profiles, strips, or other items to sheet metal panels or other material : en fr
  • FR789672A - Removable wheelbarrow : en fr
  • DE621557C - Process for the production of caffeine-free or low-caffeine tea : de en
  • US2019907A - Ice refrigerating display case : en
  • DE621256C - Resistance amplifier arrangement with feedback through space charge grids, especially for direct current amplification : de en
  • US2020275A - Control system : en
  • US2019709A - Method of making latex treated tubing : en
  • US2019765A - Frequency stabilization : en
  • FR789806A - Improvements to electrical wave transmission networks : en fr
  • GB437724A - Improvements in and relating to polyphase rectifiers : en
  • US2019998A - Circuit controller : en
  • CA353871A - Horse shoe : en fr
  • US2019829A - Device for producing artificial waves : en
  • GB437863A - Improvements in water softening apparatus : en
  • US2019654A - Endless track vehicle : en
  • US2019927A - Screw and nut steering gear for automobiles : en
  • US2020100A - Manicuring stand : en
  • DE621374C - Device for automatic scales with coarse and fine filling for regulating the goods supply : de en
  • DE621486C - Electric starting device for internal combustion engines : de en
  • DE621390C - Tensioning and locking device for band tires of packages with a corrugated wheel tensioning wheel, a tiltable locking device and a fastening hook for the lower end of the band : de en
  • GB437834A - Improvements in or relating to electromagnetic track brakes for rail vehicles : en
  • GB437856A - Improvements in water-softening apparatus of the base exchange type and in filters : en
  • DE621344C - Shedding device for round looms : de en
  • DE621609C - On the support plate for the workpiece attached straight guide for a leaf saw : de en
  • GB437690A - Improvements in or relating to the weighing units of packing machines : en
  • GB438008A - A process for the manufacture of compressed carbide bodies : en
  • US2020168A - Electrical control for valves : en
  • US2020059A - Foot operated train brake : en
  • US2020266A - Bobbin stripper : en
  • FR789867A - Process for the preparation of hardening building material mixtures containing bituminous substances : en fr
  • USD97404S - Design fob a building : en
  • FR789875A - Timber frame assembly ring : en fr
  • CA353938A - Gas material transferring apparatus : en fr
  • USD97391S - Design fob a combined bottle : en
  • USD97425S - Design fob a vending machine : en
  • FR789868A - Press for compressing clay and other similar plastics : en fr
  • GB437876A - Improvements in and relating to portmanteaus and like cases : en
  • FR789606A - Azo dyes and their preparation process : en fr
  • FR789818A - Coke crusher : en fr
  • GB437749A - Improvements in and relating to epicyclic gearing : en
  • FR789887A - Light board : en fr
  • GB437881A - An improved process and apparatus for the manufacture of parcel carriers : en
  • GB437798A - Manufacture of condensation products of the naphthalene series : en
  • FR789743A - Manufacturing process of plastics and resulting product : en fr
  • US2019970A - Arc-welding machine : en
  • FR789739A - Grate for cement kilns and the like : en fr
  • FR789854A - Plumb-line : en fr
  • GB437888A - Improvements in printing or reproducing colour photographs : en
  • DE621434C - Bruise for pendulum : de en
  • GB437797A - Improvements in and relating to turning lathes : en
  • FR789705A - Removable support for condensers of microscopes and similar devices : en fr
  • US2020257A - Food product and method of preparing the same : en
  • FR789671A - Propeller manufacturing process : en fr
  • GB437680A - Improvements in or relating to locks, latches or the like fastening devices : en
  • GB437695A - Process for the elimination of gases from liquid slag : en
  • GB437826A - Improvements in thermally-operated electric switches : en
  • DE628257C - Receiver with loudspeaker : de en
  • DE621304C - Furnace wall with embedded metallic pipelines for a coolant and method for making the wall : de en
  • FR789809A - Transformable stratospheric wind tunnel : en fr
  • FR789916A - Metal frame sofa convertible into a bed : en fr
  • USD97424S - Design for a brush : en
  • GB437921A - Improvements in or relating to locks and latches : en
  • FR789625A - Automatic die-maker oven : en fr
  • FR789866A - Improvements to films or photographic films : en fr
  • FR789923A - Improvements to aerial devices : en fr
  • DK50851C - Device for train-cleaned holders for cleaning needles for burners, in particular petroleum steam burners. : da en
  • DE621511C - Ram filter with a perforated jacket tube and a wire spiral as a filter : de en
  • FR789812A - Hollow slabs for reinforced concrete floors : en fr
  • GB437792A - Improvements in or relating to trap pipes : en
  • DE621004C - Axle holder for the axle bushes of railway vehicles with suspension in the direction of travel : de en
  • US2019974A - Hydraulic shock absorber : en
  • US2019482A - Vehicle : en
  • US2019897A - Printing machine : en
  • US2020070A - Apparel : en
  • CA353951A - Amplifier : en fr
  • DE620707C - Electromagnetic, vibratory operated pump for gases : de en
  • DE621250C - Flexible stilted shoe intended for iron pit lining : de en
  • FR789628A - Carpet : en fr
  • GB437874A - Nozzle or nozzles connected with the discharge end of the explosion chambers of explosion gas turbines : en
  • FR789951A - Distributor for pressurized fluid control device : en fr
  • GB437940A - Improvements in and relating to air extractor ventilators : en
  • US2020208A - Connection between a hoe shank and blade and method of making the same : en
  • US2020277A - Automatic closing device for casement windows and the like : en
  • GB437905A - Improvements in or relating to practice golf clubs : en
  • DE620972C - The application of head strips to bottles that are standing upright and moving continuously : de en
  • GB437660A - Improvements in or relating to gas or vapour electric discharge devices : en
  • US2019604A - Combination heating, cooking, and illuminating stove : en
  • US2020156A - Conduit joint forming means : en
  • FR789661A - Method and device for transporting wires with low absolute resistance : en fr
  • FR789829A - Variable speed control device for centrifugal governors : en fr
  • US2019561A - Telephone system : en
  • US2020103A - Weather strip : en
  • US2019676A - Enamel ware : en
  • US2020058A - Dynamo electric machine and a method of making the same : en
  • US2020253A - Universai joint : en
  • DE621576C - Method and device for separating the wort from grains, hops, proteins, lees and dirt : de en
  • FR789994A - Process for the preparation of a disazo dye : en fr
  • GB437855A - Improvements in and relating to the manufacture of cement : en
  • DE621111C - Drum filter with forcibly driven pressure rollers : de en
  • FR789623A - Use of refrigeration machines to improve the efficiency of steam engines : en fr
  • FR789721A - Direction indicator for bicycles, motorcycles and carts : en fr
  • AU1866834A - An improved apparatus for controlling overhead driving gear for sheepshearing machines : en
  • US2020001A - Circuit controller : en
  • DE621246C - Three-wheeled motor vehicle : de en
  • US2019884A - Flash light : en
  • US2020101A - Melting and holding furnace : en
  • US2019732A - Card game : en
  • USD97421S - Design for a shoe : en
  • US2019594A - Signal transmission system : en
  • US2020083A - Roadway : en
  • CA353936A - Elongating apparatus : en fr
  • CA353975A - Insulator : en fr
  • CA353914A - Anti-halation photographic layer : en fr
  • US2020087A - Display sign : en
  • US2020132A - Method of bleaching mineral matter : en
  • US2019505A - Keyboard perforator : en
  • US2019509A - Hydraulic column and arm clamp with elevating control : en
  • US2019637A - Volume control circuit : en
  • GB437957A - Improvements in or relating to cocks and igniting devices for gas burners : en
  • US2020006A - Article of manufacture : en
  • US2020079A - Toy : en
  • DE621413C - Hydraulic flow coupling : de en
  • GB438198A - Improvements in or relating to skip hoists : en
  • US2020244A - Windshield wiper arm mounting : en
  • US2019652A - Sky writing apparatus : en
  • US2019553A - Production of alumina : en
  • DE621604C - Metal core : de en
  • DK50859C - Hollow metal casing for use in the manufacture of cast concrete slabs in the soil to form a continuous slab wall. : da en
  • DE621260C - Mounting plate for electrical devices : de en
  • GB437988A - Improvements in or relating to light-polarising devices : en
  • US2019557A - Mail chute : en
  • USD97377S - Design for a collar holder : en
  • DE1353324U - : de en
  • US2019757A - Sealing means : en
  • CA353986A - Repellant or fumigant : en fr
  • DE621107C - Metal box for the production of concrete sheet piling in the ground : de en
  • DE621242C - Underwater switchgear : de en
  • DE621248C - Measuring or fitting jacket : de en
  • US2019540A - Fluid conduit : en
  • US2020204A - Shuttle : en
  • US2020044A - Door construction : en
  • CA353887A - Spreading and removing device : en fr
  • CA353896A - Eyeshade : en fr
  • DE621551C - Heat absorption body in tube form for thermometer and regulator : de en
  • US2019571A - Fabric cleansing and extracting machine : en
  • US2020149A - Drag link : en
  • US2020278A - Electric arc control for welding : en
  • DE621235C - Loading device for drafting systems of spinning machines : de en
  • AU1942434A - Adjustable mould for bricks or blocks of various shapes : en
  • AU2252935A - Improvements in or relating to grips forthe wheels of tractors orthe like : en
  • FR789632A - Method and apparatus for bringing fluids into contact with each other : en fr
  • FR789828A - Firearms Improvements : en fr
  • GB437686A - Improvements in and relating to electrical discharge devices : en
  • GB437817A - Process for the production of tubular structures from cellulose derivatives : en
  • GB437821A - Improvements in electric primary cells : en
  • US2019519A - Method of and machine for altering a steel rope : en
  • US2020051A - Process for the production of furoyl substituted mercaptobenzothiazoles : en
  • CA354006A - Retractible valve stem : en fr
  • FR789608A - electrode intended for electric arc welding and provided with a coating : en fr
  • FR789780A - Battery with only one liquid, regenerable by air : en fr
  • US2020091A - Jar mill : en
  • US2019512A - Means for preventing reverse winding of a cable on a drum : en
  • US2020176A - Savings bank : en
  • US2020217A - Jar closure : en
  • DE621122C - Material measuring machine : de en
  • DE621490C - Device for calculating the sharp zone boundaries : de en
  • GB437755A - Process for providing tubes with an internal protective covering : en
  • USD97430S - Design fob a typewriting machine : en
  • CA354004A - Tire bead : en fr
  • DE621356C - Ventilation device for fermentation tubs : de en
  • CA354018A - Cellulose ester production : en fr
  • US2019693A - Framed hand bag and removable cover therefor : en
  • US2019922A - Combination heating and irrigating system : en
  • US2020127A - Electric heating resistor and mounting therefor : en
  • US2019673A - Rove stop mechanism : en
  • DE621454C - Process for the production of ketones : de en
  • US2019852A - Production of asbestos cement sheets, tiles, and the like : en
  • US2019855A - Tape puller for projectors : en
  • DE621583C - Boiler flame tube with a helical guide device for the heating gases : de en
  • US2020245A - Apparatus for handling material : en
  • CA353969A - Bran milling method : en fr
  • FR789638A - Internal combustion engine with cylinders arranged in a star : en fr
  • US2019744A - Denattjeed alcohol : en
  • US2020219A - Sanding drum : en
  • US2020031A - Method of forming glass articles : en
  • DE621299C - Device for using a Braun tube as a synchronoscope : de en
  • DK50870C - Device by means of a photographic film copying machine, in which a tone strip can be recorded on a positive film electrically at the same time as the copying of the image strip. : da en
  • DE621284C - Process for the production of a reinforced stand-up collar : de en
  • FR775732A - Automatic gear change : en fr
  • FR789984A - Improvements to electronic amplifiers mounted in opposition : en fr
  • FR789734A - Cinematographic projector : en fr
  • AU289468B2 - Improvements in or relating to opening machines : en
  • US2020084A - Support for telephone hand sets : en
  • FR789646A - Shirt retaining device : en fr
  • FR789732A - Saliva absorbent roller for dentistry : en fr
  • FR789803A - Device for defrosting drawers of refrigerating machines and the like : en fr
  • US2019656A - Freight vehicle : en
  • US2020251A - Propionic acid fermentation process : en
  • GB438015A - Improvements in and relating to temperature indicators for transformers : en
  • GB437800A - Improvements in or relating to valves for controlling the flow of hot gases : en
  • US2019865A - Production of lacquer bases : en
  • US2020071A - Fire hydrant : en
  • US2020160A - Automatic control and safety apparatus for use on power driven vehicles : en
  • US2020195A - Current wave indicating apparatus : en
  • CA353901A - Chipper knife : en fr
  • DE621234C - Device for coating objects with viscous masses by dipping : de en
  • FR789785A - Post or support for road signs : en fr
  • GB437987A - Improvements in and relating to direction indicators for motor vehicles and the like : en
  • US2019620A - Shock absorber : en
  • US2019762A - Process for the manufacture of tertiary alcohols : en
  • US2020066A - Manufacture of low pour lubricating oil : en
  • US2019786A - Hydraulically operated valve unit : en
  • GB437721A - Improvements in and relating to liquid fuel furnaces : en
  • DE621424C - Device for automatic control of the idling speed of the drive engine of a motor vehicle with a freewheel device and auxiliary machines operated in the auxiliary drive : de en
  • US2019844A - Azodyestuff : en
  • GB437669A - Improvements in or relating to conversion of alternating currents : en
  • FR789851A - Piston rings : en fr
  • US2019492A - Electron discharge device : en
  • US2020147A - Vending machine : en
  • CA353883A - Clutch device : en fr
  • US2019523A - Packing : en
  • DE607685C - Method for operating deflagration chambers, in particular for internal combustion turbines : de en
  • DE621456C - Process for the determination of unsaturated china alkaloids in addition to saturated ones and for their separation : de en
  • DE621603C - Process for lining furnace vessels : de en
  • FR789877A - Gluing machine for roll paper webs for immediate use : en fr
  • FR789710A - Device for planting fodder roots : en fr
  • FR789929A - Improvements to mortise locks : en fr
  • US2019710A - Chicken brooder and finishing battery : en
  • US2020256A - Protective coatings and process of applying and removing : en
  • FR789614A - Improvements to gearboxes : en fr
  • GB438004A - Improvements relating to variable speed transmission gear : en
  • FR789968A - Hair activity products : en fr
  • US2019686A - Alloy : en
  • USD97411S - Design fob a badge ob similar : en
  • DE621581C - Process for the production of compounds rich in alkali cyanide : de en
  • FR789940A - Zig-zag sewing machine : en fr
  • DE621435C - Alarm clock with pre-alarm : de en
  • DE621443C - Process for the production of conversion products from fatty oils that are soluble in mineral oils : de en
  • USD97401S - Design for a shoe : en
  • US2019538A - Carton and blank for forming the same : en
  • AU2095735A - Improved fitting for cases forthe transport of eggs : en
  • DE621315C - Device for allocating and weighing rod-shaped goods : de en
  • CA353888A - Pen or pencil support : en fr
  • DE621254C - Device for quartz oscillators with thermostat : de en
  • GB437923A - Improvements in or relating to devices for cooking, frying and baking and comprisingheat accumulating means : en
  • US2019695A - Pyrometer : en
  • USRE19747E - Method of cooling composition tile : en
  • US2019737A - Sensitive photographic material : en
  • DE621269C - Pressure device for the knives of the cutting mechanism of mowing machines : de en
  • FR789749A - Improvements made to the injectors of internal combustion engines : en fr
  • GR5498B - AUTOMATIC DOORS OF WINDOW DOORS. : el en
  • GB437906A - Improvements in or relating to the elevators used on sheaf-binding harvesting machines : en
  • DE621526C - Resilient pit punch consisting of two telescopic parts : de en
  • DE621605C - Case made of leather or similar fabric : de en
  • FR789709A - Manufacturing process of rubber espadrilles with large outer stitch : en fr
  • GR5489B - ELECTRIC WATCH. : el en
  • US2019529A - Aminobenzothiazole compound : en
  • US2019966A - Propeller : en
  • US2019801A - Cup holder : en
  • US2019491A - Apparatus for treating foods : en
  • DE621520C - Electric hand lamp with soft rubber handle : de en
  • US2019724A - Refrigerating system : en
  • US2019892A - Cellulosic composition of matter containing a carbamate : en
  • FR789905A - Manufacturing process of nitro-naphthylamines : en fr
  • DE621400C - Feed water preheater for locomotives, in which the feed water is injected in two jets that meet : de en
  • FR789945A - Device for pinning sheets : en fr
  • GR5491B - METHOD OF MANUFACTURING FRAMES USED FOR THE PRINTING OF FABRICS ACCORDING TO THE FILM DRUK METHOD. : el en
  • FR789647A - Improvements to diaphragm valves, in particular those for gaseous fluids : en fr
  • GB437936A - Improvement in paper fastener : en
  • FR789742A - Automotive brake : en fr
  • GB437996A - Improvements relating to space heaters or radiators : en
  • FR789760A - Device for copying the outline of the route of an aircraft in sound tracking devices : en fr
  • FR789835A - Packaging for cigarettes : en fr
  • FR789840A - Improvements to cinematographic projection devices : en fr
  • FR789843A - New type of climbers for the ascent of all supports : en fr
  • GB437763A - Improvements in means for effecting regenerative control of electric motors : en
  • DE621478C - Device for the automatic control of the grate feed in combustion systems : de en
  • FR789612A - Hand knitting machine : en fr
  • GB437712A - Improvements in or relating to fish lures : en
  • GB437814A - Improvements in and relating to fabric measuring machines : en
  • GB438002A - Improvements in or relating to electromagnetically-operated electric switches : en
  • GB438012A - A device for cleaning between the prongs of domestic table forks and the like : en
  • US2020038A - Multiple effect evaporator : en
  • US2019707A - Building construction : en
  • FR789946A - Improvements to metal fence gates and grilles : en fr
  • GB438021A - Apparatus for automatically regulating the attitude, course or speed of an aircraft : en
  • CA353924A - Ammonia recovery from pulp liquor : en fr
  • US2019736A - Fitter or shaper for glass articles : en
  • US2019879A - Rotary turbine motor : en
  • DE621312C - Pressing tool for the production of workpieces made of synthetic resin or the like. : de en
  • DE621590C - Contact arrangement for plumbing equipment : de en
  • US2019856A - Slug casting machine : en
  • US2019902A - Counter : en
  • US2020246A - Apparatus for handling material : en
  • US2019513A - Mounting for oscillating members : en
  • US2019649A - Vertical drier for web material : en
  • US2019733A - Container : en
  • US2020067A - Device for determining the temperature of electrically conductive bodies : en
  • US2019549A - Pumping unit with sliding gear crank arm release : en
  • US2019619A - Fire-clay sewer-pipe body : en
  • DE620915C - Rock drilling machine for tunnel construction : de en
  • US2019933A - Ricinoleate medicament for internal use : en
  • US2019956A - Automatic light signal : en
  • CA353903A - Television device : en fr
  • US2019670A - Power mechanism : en
  • AU1992134A - Improved method of and receptacle for preserving comestibles during storage and transport : en
  • CA353949A - Tire building apparatus : en fr
  • DE621466C - Process for heating electrically conductive wires in the pull-through process using alternating current or high-frequency current : de en
  • GB437723A - Electron discharge devices : en
  • CA353948A - Strip rubber production : en fr
  • CA353967A - Ricinoleic acid purification : en fr
  • GB437880A - Braking apparatus : en
  • US2019962A - Temperature regulator : en
  • AU2006534A - Improvements in machines for washing bottles orthe like : en
  • FR789894A - Arrangement for varying the compression in piston steam engines, in particular in locomotive steam engines, with valve distribution : en fr
  • GB438269A - Improvements relating to plug valve : en
  • USD97392S - Design for a snow suit : en
  • FR789910A - Method and device for disinfecting telephone apparatus : en fr
  • GB437673A - Improvements in or relating to excess current circuit breakers : en
  • GB437965A - Improvements in walling ties : en
  • US2019639A - Hand operated cultivator : en
  • FR789615A - Holding brake enhancements : en fr
  • CA353919A - Poultry feeder : en fr
  • GB437687A - Improvements in and relating to meat safes and the like containers : en
  • GB437812A - Improvements in variable speed hydraulic power transmission gears : en
  • GB437946A - Improvements in or relating to electric batteries : en
  • DE621514C - Internal combustion-electric power transmission for vehicles : de en
  • US2019647A - Roof of buildings : en
  • DE621396C - Process for preparing staple fibers for further textile processing by oils : de en
  • DK50849C - Impact bar trap for Rats and Mice. : da en
  • FR789926A - Improvements to manufacturing processes for rubber products and these products : en fr
  • US2019663A - Running board : en
  • USD97380S - Design for a shoe : en
  • FR789859A - Prefections to bricks : en fr
  • DE621367C - Circuit for measuring the operating status, in particular the respective charge and discharge status of an electrical collector battery : de en
  • DE621472C - Process for the production of selenium cells or similar cells : de en
  • US2019504A - Activation process for electron emitters : en
  • US2019679A - Centrifugal pump : en
  • GB438115A - Improvements in apparatus for purifying and otherwise treating air by washing : en
  • US2019738A - Skate : en
  • US2019629A - Mine walling : en
  • DE621188C - Device to prevent rope slack on a crane hoist to pick up aircraft from the water : de en
  • FR789701A - Improvements in the manufacture and applications of azo dyes : en fr
  • GB437803A - Improvements in and relating to automatic lathes : en
  • DE621405C - Removable handle for pots and pans like : de en
  • GR5494B - KOFINOS WASHING SULTANINA. : el en
  • FR789777A - Pressed compass for convertible tops of baby carriages and other uses and its manufacturing process : en fr
  • GB437788A - Improvements in or relating to electron discharge devices and electrical oscillation generators incorporating the same : en
  • CA353866A - Colour photography : en fr
  • DE621388C - Locking device on end-of-line machines with command transmission by following pointer device : de en
  • DE621393C - Folding bridge drive : de en
  • FR789696A - Harrow : en fr
  • FR789748A - Automatic feeding device for steam or hot water generator : en fr
  • GB437754A - Improvements in or relating to convertible chair beds : en
  • DE621330C - Horizontally slidable plates of counters or the like. : de en
  • DE621459C - Process for the production of amalgam printing forms : de en
  • FR789683A - Metal polisher : en fr
  • DE621547C - Centrifugal casting mold : de en
  • FR789627A - Installation for the manufacture of a fiber from rovings of artificial threads : en fr
  • GB437973A - An improved means of sound amplification and projection : en
  • CA353868A - Bottle cap : en fr
  • US2019672A - Roll film container : en
  • US2020092A - Motor mounting : en
  • GB437698A - Improved carton or box for electric lamps or like articles : en
  • GB437961A - Improvements in or relating to vehicle-brakes : en
  • GB437966A - Improvements in devices for the application of dyes and the like to the hair : en
  • FR789654A - Torque turbo-transformer : en fr
  • US2019760A - Cableway carriage : en
  • DE621331C - Method and device for covering sheet or web-shaped materials with paint, varnish, varnish, waterproof materials, or the like. : de en
  • DE621240C - Device for monitoring the symmetrical position of the sector-shaped pre-twisted cores to the cable axis during their stranding with reverse rotation to an electrical cable : de en
  • US2019934A - Tool and method of making the same : en
  • GB437789A - Improvements in protective facings and reinforcements for earthworks : en
  • GB437986A - Improvements in apparatus for general anaesthesia : en
  • US2020108A - Dispensing closure for containers : en
  • US2020102A - Scaffolding clamp : en
  • USD97409S - Design for a baseball target game : en
  • US2020013A - Grading apparatus : en
  • GB438009A - Improvements in and relating to cells for alkali chloride electrolysis : en
  • GB437775A - Apparatus for manufacturing strips and other articles of rubber or celluloid : en
  • GB437786A - Improvements in and relating to the generation of high pressure steam : en
  • GB437807A - Method for sensitising photographic emulsions : en
  • DE621431C - Projectile : de en
  • FR789821A - Vertical bottle washing machine : en fr
  • FR789904A - Process for producing heliographs and device for implementing this process : en fr
  • FR789704A - Novel arylamides of acylacetic acids, azo dyes obtained from these arylamides and processes for the preparation of these bodies : en fr
  • US2019572A - Garment hanger attachment : en
  • DK50847C - Mounting insert for Radsaamaskiner for use in sowing beet seed. : da en
  • DE621201C - Device for measuring and recording the alignment errors of rails : de en
  • FR789886A - Thermal motor : en fr
  • FR789619A - Airplane lift and stabilizer control system : en fr
  • FR789932A - A process for carrying out reactions in chambers which are periodically heatable and have a construction for accumulating heat : en fr
  • GB438124A - Improvements in and apparatus for the recovery of phenols from aqueous solutions : en
  • DE621565C - Device for attaching hose connectors, small filters or the like. : de en
  • US2019499A - Scoring machine : en
  • US2020230A - Chair leg rest : en
  • US2019882A - Indicating scale for wireless receivers : en
  • US2020192A - Electrically illuminated device : en
  • DE621468C - Coal pressure regulator : de en
  • GB437938A - Improvements in and relating to dishwashing apparatus : en
  • GB438122A - Improvements in the manufacture and production of quaternary ammonium compounds of derivatives of the anthracene series : en
  • FR789673A - Packaging for bunches of bananas and other fruits : en fr
  • FR789723A - Formwork for reinforced concrete floor : en fr
  • US2019668A - Drier : en
  • US2019854A - Cultivator attachment for tractors : en
  • US2020232A - Refrigerating apparatus : en
  • US2019798A - Dispensing tube cap : en
  • US2019678A - Combination cigarette-lighter case : en
  • US2019883A - Dehydrogenation of hydrogenated heterocyclic compounds : en
  • US2019522A - Portable luncheon cabinet : en
  • US2019914A - Water-insoluble azo-dyestuffs and fiber dyed therewith : en
  • CA353974A - Insulator : en fr
  • US2020184A - Portable hood : en
  • FR789624A - Improvements to television systems : en fr
  • US2020007A - Ornamentation and method for the same : en
  • USD97393S - Design fob a knee pad : en
  • DE621495C - Method for checking sound recordings produced by resynchronization : de en
  • CA354020A - Cement grout mixing and distributing machine : en fr
  • DE621245C - Process for the preparation of a photographic exposure material for color halftone images : de en
  • US2019473A - Slant adjustment for lateral arm awnings : en
  • CA353926A - Blasting cartridge : en fr
  • US2020018A - Power hammer : en
  • US2019542A - Siliceous refractory : en
  • US2019474A - Method of producing composite sheets : en
  • US2020166A - Sound reproducing apparatus : en
  • US2019806A - Vehicle axle : en
  • AU2153135A - Improvements in shock absorber : en
  • USD97382S - Design for a cigarette box or : en
  • US2019545A - Lady's undergarment : en
  • US2019688A - Alloy : en
  • US2019761A - Rotary drilling machine : en
  • US2019770A - Vacuum tube arrangement and circuit : en
  • DE621266C - Ferromagnetic light control device : de en
  • GB437701A - Improvements in or relating to illuminated letters and signs : en
  • GB437846A - Improvements in or relating to navigable vessels : en
  • CA354009A - Electric radiant heat element : en fr
  • DE580552C - Door lock : de en
  • FR789693A - Folding pram with automatic locking : en fr
  • GR5490B - COMPOSITE NEW HORSE HORSE. : el en
  • FR789717A - Improvements to the filling of tubes or other high pressure gas containers : en fr
  • FR789863A - Improvements to devices for supplying annealing installations : en fr
  • GB437830A - Improvements relating to soldering irons : en
  • FR789955A - Lady's pants : en fr
  • US2019589A - Automatic fluid flow regulator : en
  • DE617399C - Sliding axle bearings : de en
  • CA353954A - Artificial resin : en fr
  • US2019771A - Juice strainer : en
  • CA354011A - Chair or settee : en fr
  • DE621335C - Elastic claw coupling, especially for driving electrical machines on motor vehicles : de en
  • GB437935A - Improvements in and relating to inverse reducer circuits for use in the electric supply to x-ray tubes : en
  • US2020113A - Cutting machine : en
  • US2019528A - Balanced door : en
  • US2019539A - Manufacture of benzyl cellulose : en
  • AU2019434A - Improvements in and relating tothe manufacture of bands for trousers : en
  • AU1991734A - An improved flexible belt or band : en
  • CA353989A - Automobile frame : en fr
  • DE621310C - Step ladder with bucket holder : de en
  • CA353908A - Liquid heating apparatus : en fr
  • USRE19745E - Slack adjuster : en
  • US2019813A - Oil cooling device : en
  • US2019971A - Arc welding machine : en
  • US2020210A - Dispensing container : en
  • AU1947834A - Systems of plate resonators for electro-optics, quasi-optics and dielectric resonanzpolarization within the ultrashort wave range : en
  • CA353874A - Ventilator : en fr
  • US2019708A - Course calculating instrument : en
  • US2020041A - Hydraulic steering device : en
  • DE621276C - scissors : de en
  • CA353966A - Cellulosic material bleaching method : en fr
  • CA353992A - Meringue composition : en fr
  • US2020259A - Hat : en
  • US2019931A - Rotary hammer tool : en
  • US2020272A - Liquid dispensing apparatus : en
  • DE621593C - High current switch : de en
  • US2019479A - Carbonator : en
  • US2019712A - Engine starting device : en
  • US2020274A - Broom and staff holder : en
  • US2019900A - Accounting machine : en
  • US2020139A - Electromechanical translating device : en
  • US2019948A - Apparatus for testing lubricants : en
  • US2019828A - Freewheel clutch for heavy loads : en
  • FR789922A - Bag for material that pours and can transform in the bag into a shapeless, compact or hard mass : en fr
  • GB437764A - Improvements in sight-testing apparatus : en
  • CA353880A - Boiler : en fr
  • FR789757A - Method and device for the elimination of interference in broadcast receivers : en fr
  • US2019842A - Child's diaper : en
  • FR789697A - Device for the continuous supply of cartridges in automatic firearms : en fr
  • CA354014A - Manifolding register : en fr
  • US2019819A - Airfoil : en
  • DE621591C - AC circuit breaker for power circuits : de en
  • FR789995A - Process for preparing ammonium sulphate in the form of scales, particularly suitable for storage and spreading : en fr
  • GB437700A - Improvements in and relating to boxes of cardboard, millboard and the like : en
  • GB437760A - Pistons : en
  • FR789846A - Improvements to illuminated signs : en fr
  • FR789635A - Elastic suspension of the body of motorcycle sidecars : en fr
  • GB449892A - Posting sheet for the so-called systematic book-keeping and daily report sheet : en
  • DE621464C - Procedure to avoid non-linear feedback in two-band transmission systems : de en
  • FR789678A - Propeller blade shaping machine and other items : en fr
  • GB437768A - Improvements in or relating to the fuel supply means of internal combustion engines : en
  • DE621556C - Needle bar storage for buttonhole sewing machines : de en
  • GB437784A - Improvements in or relating to electron discharge devices : en
  • DK50858C - Outboard motor for placement on the boat side. : da en
  • FR789832A - Improvements to packaging processes and machines : en fr
  • FR789682A - Oil filter : en fr
  • FR789609A - coated electrode, intended for electric arc welding : en fr
  • GB437920A - Improvements in electric braking arrangements for electric motors : en
  • USD97372S - Design for a game apparatus : en
  • GB437780A - Improvements in or relating to rolling mills : en
  • GB437964A - Improvements in apparatus for humidifying and purifying the air in rooms : en
  • USD97448S - Design for an advertising signboard : en
  • US2019840A - Process of preparing 1,4-dihalogen-anthraquinone-2-carboxylic acids : en
  • US2020136A - Pinking machine : en
  • US2020162A - Hydraulic press : en
  • US2019648A - Moistureproof cellulose acetate sheeting : en
  • USD97417S - Design for a plate or similar : en
  • US2019824A - Method of preparing a peat-containing fertilizer : en
  • US2019484A - Electron discharge device : en
  • US2019807A - Light-current electric switch suitable for wireless receivers : en
  • DE621395C - Process for the aftertreatment of artificial silk threads : de en
  • FR789796A - Process for capturing and transforming natural energy : en fr
  • GB438515A - A method of purifying crude extracts of the germinal gland hormones and of isolating the latter therefrom : en
  • US2019661A - Universal screen : en
  • US2019671A - Geared control mechanism : en
  • US2019991A - Heating apparatus for automotive vehicles : en
  • FR789700A - Process for refining a liquid feed by means of a gas : en fr
  • GB438020A - Apparatus for automatically regulating the course or speed of an aircraft : en
  • DE620756C - Bogenfoermiger expansion frame made of rolled U-shaped beams for mine routes, tunnels, shafts u. like : de en
  • DE621247C - Process for the manufacture of cartridged explosives of the demolition type : de en
  • DE621429C - Hand-operated knife for meat products that is moved to and fro by an external force opposite the handle : de en
  • DE621530C - Ventilation device for drying caked items to be dried : de en
  • GB437705A - Improvements in or relating to the ventilation of vehicles : en
  • GB437867A - Improvements in or relating to printing appliances employing embossed printing plates : en
  • GB437978A - Improvements in or relating to automatic firearms : en
  • US2019958A - Steerable sled : en
  • FR789847A - Process for establishing aerated leathers for headgear and resulting industrial products : en fr
  • GB437647A - Improvements in and relating to granules of carbon black : en
  • GB437787A - Propeller drive for wingless aircraft : en
  • US2019631A - Yarn twisting apparatus : en
  • CA353904A - Glass gasket strip : en fr
  • DE621359C - Process for white or colored reservation of effect threads in mixed fabrics when dyeing with indigoid dyes : de en
  • GB437709A - Improvements in or relating to apparatus for artificial respiration : en
  • GB437731A - Improvements in and relating to wireless and like apparatus for the reception of modulated carrier oscillations : en
  • DE621501C - Propellant body for projectiles : de en
  • US2020121A - Motor suction unit : en
  • US2019944A - Centrifugal treatment of viscoses : en
  • US2019475A - Razor blade for safety razor devices : en
  • US2020138A - Printer's press furniture base : en
  • US2020048A - Process of making tubular rawhide articles : en
  • USD97386S - Design fob a blouse : en
  • USD97407S - Design fob a shoe : en
  • US2019729A - Electric rectifier : en
  • US2019784A - Pump construction : en
  • US2019960A - Awning device : en
  • US2020270A - Vehicle holddown device : en
  • US2019996A - Combination corset and brassiere : en
  • US2020029A - Ironing machine attachment : en
  • FR789684A - Installation and apparatus for cleaning hollow bodies by sandblasting : en fr
  • FR789869A - Transmission mechanism for cinematographic projector : en fr
  • FR789914A - Frame for a semi-trailer comprising a coupling member with a towing vehicle : en fr
  • DE621255C - Telephony circuit : de en
  • DE621343C - Overloading arrangement for two conveyor belts : de en
  • FR789992A - Starting and adjustment device for refrigeration systems with turbo-compressor : en fr
  • US2020141A - Carburetor : en
  • DE621300C - Current transformer with two iron cores : de en
  • DE621469C - Differential protection arrangement for faulty system parts : de en
  • DE621489C - Process for silver plating aluminum and rolled aluminum alloys : de en
  • FR789786A - Collector short-circuiting and brush lifting device, for repulsion motors : en fr
  • AU1999034A - Compartment paperbag or packet : en
  • DE621587C - Rail joint connection : de en
  • FR789666A - Bottle neck with special holes : en fr
  • GB437679A - Improvements in electro-magnetic contactors : en
  • US2019885A - Blow-out preventer : en
  • FR789986A - Prosthetic parts for the interior of the body of humans or animals, in particular prosthetic parts for chewing : en fr
  • CA354016A - Engine silencer : en fr
  • DE621263C - Method and device for registering current or voltage fluctuations : de en
  • US2019876A - Pneumatic dispatch system : en
  • USD97410S - Design fob a combined casket lug : en
  • USPP147P - bobbink : en
  • FR789996A - Improvements to magnetic cores and their production processes : en fr
  • GB437918A - Pump assembly : en
  • US2019938A - Automotive lifting device : en
  • GB437977A - Improvements in printing or padding native regenerated cellulose fibres or animal fibres : en
  • DE621541C - Process for the production of synthetic resins : de en
  • GB437836A - Improvements in fire-screens : en
  • GB438003A - Improvements in syringes : en
  • IE13753L - Bricks : en
  • US2020144A - Spray nozzle : en
  • US2019746A - Muffler : en
  • FR789769A - Method and device for protection against the action of frequency spectra resulting from modulated carrier waves : en fr
  • FR789857A - Manufacturing process for vinyl resins : en fr
  • DE621498C - Safety coupling : de en
  • DE621099C - Brake for motor vehicles, especially aircraft : de en
  • FR789989A - Potato masher : en fr
  • DE620785C - Program controller for vulcanizing devices : de en
  • DE621382C - Method and apparatus for facilitating the loading of a film into a cinema projector : de en
  • DE621385C - Lifting device for motor vehicles permanently connected to the chassis : de en
  • FR789753A - Development of internal combustion engines : en fr
  • GB437967A - Improvements in thermionic cathodes : en
  • US2019531A - Process for varnishing fabrics, leather, and the like : en
  • US2019716A - Double section tire cover : en
  • FR789729A - heating element for devices with permanent waves : en fr
  • FR789727A - Improvements to discharge tubes : en fr
  • GB437970A - Improvements connected with the projection of coloured light and apparatus for use therewith : en
  • US2019930A - Folding mechanism for use in rotary printing machines : en
  • US2019891A - Tabulating machine : en
  • DE621322C - Stuffing box with metal packing rings that are under axial spring pressure and pressed on by a hose spring : de en
  • DE621516C - Flexible power supply line for portable power consumers : de en
  • GB437839A - Improvements in or relating to visible card index devices : en
  • GB437956A - Improvements in or connected with protective devices for twin-tyres : en
  • CA353945A - Cigarette manufacturing apparatus : en fr
  • FR789675A - Process for making water-repellent shaped materials and articles : en fr
  • FR789975A - Vehicle wheels : en fr
  • US2019803A - Doorstop : en
  • US2020239A - Variable pitch propeller : en
  • FR789879A - Vibratory sieve working under a liquid : en fr
  • FR789974A - Electrical apparatus more particularly intended for high frequency currents : en fr
  • CA353939A - Cavity brick : en fr
  • DE620905C - Process for the production of condensation products : de en
  • DE621274C - Motorcycle sidecar frame : de en
  • DE621323C - Device moved by weight for advancing the turret slide on turret pivot arms when thread cutting : de en
  • DE621345C - Manufacture of heavy-duty, pressure-welded pressure vessels, steam boilers, pipes, etc. Like. Made of alloyed mild steel : de en
  • FR789733A - New layout of refit holds : en fr
  • FR789878A - Application of transparent tinted enamels on decorated tiles for wall coverings : en fr
  • DE621460C - Form cylinder divided in the longitudinal direction, in particular gravure form cylinder : de en
  • CA353995A - Regulator : en fr
  • FR789694A - Product for the protection of wood, plants and trees : en fr
  • GB437653A - Improvements in or relating to the manufacture of organic sulphur compounds : en
  • US2019507A - Apparatus for fractionating finely divided material : en
  • US2020022A - Hat form : en
  • FR789655A - Arc extinguishing switch by a stream of pressurized fluid : en fr
  • FR789991A - Potato masher : en fr
  • DE621440C - Process for the production of quick drying varnishes : de en
  • DE621493C - Roll film camera : de en
  • FR789934A - Process for obtaining pure hydrogenated fatty acids : en fr
  • FR789636A - Motorcycle sidecar with running wheel and body resiliently connected to the frame by torsion bars : en fr
  • DE621527C - Hand drive for Reiber washing machines : de en
  • GB437911A - A brake drum adapted mainly for use in connection with vehicle wheels : en
  • FR789617A - Electrolytic oxidation process of aluminum alloys : en fr
  • AU1988834A - Improvements in or relating to television and like systems : en
  • GB437691A - Improvements in or relating to centrifugal machines : en
  • US2019497A - Acoustic echo distance measuring system : en
  • US2019564A - Laundry machine mechanism : en
  • US2019662A - Air control receiver : en
  • GB437655A - Process for the production of plastic-elastic compositions : en
  • GB437644A - An improved liquid container : en
  • GB437674A - Emulsions of asphaltic and like materials : en
  • GB437985A - Improvements in and relating to pistons and the manufacture thereof : en
  • FR789630A - Process for the production of chocolate candies filled with a liquid sugar solution : en fr
  • DE621502C - Bulletproof armor, especially for clothing : de en
  • FR789876A - Water heater with or without water circulation, to be mounted or placed on any gas stove, electric, gas stove of any kind : en fr
  • GB437851A - Improvements in or relating to roofing tiles, and to bricks formed of porous material : en
  • US2019577A - System of variable amplification : en
  • FR789670A - Process for obtaining anhydrous magnesium carbonate (giobertite) from dolomite or limestone : en fr
  • US2019886A - Thermohygrometer : en
  • US2019910A - Car end construction : en
  • US2020049A - Machine for surfacing reeds : en
  • DE621264C - Device for the rapid sterilization of dental instruments and supplies : de en
  • FR789736A - Sheath for watch movements and watches fitted with this sheath : en fr
  • FR789754A - Electric diverter : en fr
  • FR789931A - Process for dyeing and finishing skeins, more particularly applicable to rayon or artificial silk cakes : en fr
  • GB437899A - Improvements in or relating to fuel injection systems for internal combustion engines : en
  • GB437707A - Improvements in electric accumulators : en
  • FR789830A - Device for adjusting the fuel supply in internal combustion engines : en fr
  • GB437870A - Improved process for making a briquetted fuel and product obtained by this process : en
  • GB437937A - Method and apparatus for differentiating geological formations penetrated by depth bores : en
  • DE621291C - Lifting device for lower tools of press brakes : de en
  • DE621558C - Security device against theft of motor vehicles : de en
  • GB437659A - Improvements in or relating to the treatment of platinum contact masses : en
  • GB437890A - A new or improved method of treating native starches with oxidising agents : en
  • GB437915A - Improvements in and relating to incineration furnaces : en
  • DE621415C - Cleaning device for dust filter : de en
  • US2019743A - One-piece guard rail : en
  • US2019857A - Tape winding reel : en
  • US2020262A - Surgical splint and reducing frame : en
  • GB437963A - Improvements relating to the fitting of tables to chairs or seats : en
  • DE621497C - Anti-skid device for wheel tires : de en
  • FR789603A - Washing machine : en fr
  • US2019635A - Hygrometer operated switch : en
  • DE621120C - Device for the extraction and promotion of rock layers : de en
  • DE621380C - Light meter for photographic apparatus with viewfinder : de en
  • FR789707A - Improvements to ornamental panels and their manufacturing method : en fr
  • US2019675A - Sound picture screen : en
  • US2019767A - Motion picture camera : en
  • US2019516A - Figure toy : en
  • US2020263A - Lubricating apparatus : en
  • US2019859A - Upside down shuttle friction : en
  • US2020249A - Baseball mask : en
  • GB437896A - Improvements in switch-controlling arrangements for electric adaptors and switch lamp-holders : en
  • US2019812A - Liquid dispensing device : en
  • DE621302C - Electrically heated portable crucible : de en
  • DE621515C - Circuit arrangement for testing connection devices and lines in unsupervised sub-offices : de en
  • US2019625A - Electrical apparatus : en
  • US2019680A - Lip stick holder : en
  • DE621579C - Process for producing semi-coke in chamber ovens : de en
  • US2020185A - Copygraph : en
  • GB437668A - Improvements in motor car bodies : en
  • GB437783A - Improvements in or relating to vibration translating devices such as electric reproducers for use with sound records : en
  • GB437968A - Improvements in and relating to apparatus for use in glazing bricks, tiles and the like : en
  • DE621159C - Switching device for engaging and disengaging clutches in office machines : de en
  • US2020034A - Sand conditioning apparatus : en
  • US2019759A - Dry ice refrigeration : en
  • CA354005A - Strand handling mechanism : en fr
  • US2020024A - Molding composition and method of preparing same : en
  • CA354007A - Spring structure : en fr
  • CA353996A - Hydrocarbon oil conversion : en fr
  • US2020231A - Loading device : en
  • US2019634A - Photo-electric tube : en
  • US2020228A - Method of cleaning : en
  • DE621589C - Arrangement for monitoring and measuring the current in cable ladders : de en
  • GB437683A - Improvement in pectin and its manufacture : en
  • US2019864A - Communication system : en
  • US2020205A - Bottle attachment : en
  • FR789977A - Method for automatic axial displacement of rotary vanes or similar members and apparatus including application : en fr
  • GB437822A - Improvements relating to feeding bottles : en
  • US2019580A - Manicuring implement : en
  • US2020133A - Incubator : en
  • USD97414S - Design for a radiator trap : en
  • FR789658A - Oscillating joint : en fr
  • FR789715A - Exhaust gas turbine with charge blower : en fr
  • DE576856C - Cooling machine with deeper than the gear housing of the compressor and with it standing in open connection flooded evaporator : de en
  • DE621332C - Light shaft for viewfinder of photographic cameras : de en
  • DE621504C - Process for the production of completely lifelike imitations of reptile leather u. like : de en
  • DE621524C - Oven with a baking chamber housing formed from a closed baking box and supporting frames built into it : de en
  • FR789605A - Machine for cutting and notching tenons and mortises : en fr
  • FR789896A - Valve system : en fr
  • US2019640A - Keyboard of musical instruments : en
  • US2019714A - Tire cover construction : en
  • US2020236A - Hair waving cap : en
  • US2020254A - Apparatus for measuring liquid level : en
  • US2019556A - Wheel : en
  • US2019848A - Self-feeding press : en
  • US2019942A - Stoker for furnaces : en
  • DE621239C - Process for the operation of absorption refrigerators : de en
  • DE621355C - Bell gas pressure regulator : de en
  • US2019644A - Thread cleaning device : en
  • US2019664A - Closure fastener : en
  • US2020229A - Fluid pressure brake : en
  • US2019899A - Motor fuels containing inhibitors : en
  • CA353980A - Talking motion picture apparatus : en fr
  • US2019816A - Card index : en
  • AU2007334A - Container closure : en
  • CA354012A - Injection engine : en fr
  • CA353984A - Window channel : en fr
  • CA354002A - Tire tube : en fr
  • GB437649A - Manufacture of glyoxylic acid : en
  • US2019638A - Clutch and brake mechanism : en
  • FR789667A - endless chain elevator for removing pomace from fermentation tanks : en fr
  • FR789856A - Distillation retort mounted in a chamber furnace for the production of coke and gas : en fr
  • FR789903A - Improvements in rolling mills or other roller machines and their associated guides : en fr
  • US2020250A - Cascade deaerator : en
  • USD97426S - Design for a combination lip stick : en
  • CA353925A - Resinous composition : en fr
  • DE621546C - Arc drum furnace : de en
  • FR789752A - Process for the treatment of solutions of a colloidal and crystalloidal nature and in particular of sugar juice and waste water : en fr
  • DK50850C - Mechanism for opening and closing hinged closing wings, such as windows and doors. : da en
  • GB437689A - Improvements in rail anchors : en
  • GB437771A - Improvements in or relating to racks for dishes or the like : en
  • US2020164A - Headlight for motor cars : en
  • DE621406C - Boot tip holder with swivel lever that can be attached to boot jacks : de en
  • FR789787A - Device for cooling electric resistances formed by lamps : en fr
  • GB438028A - Attaching fabrics or fabric decorations to fabric bases : en
  • CA353990A - Weldrod and arc welding : en fr
  • US2020175A - Wire stretcher and splicer : en
  • AU1988734A - Improvements in or relating to television and like receivers : en
  • US2020260A - Lock barrel retaining pin : en
  • US2019548A - Pile driver : en
  • US2020137A - Process of coloring bricks : en
  • US2020157A - Abrading shaft mounting : en
  • CA353882A - Attached automobile jack : en fr
  • AU1861634A - Side attachment for cultivating implement : en
  • US2019939A - Amplification means : en
  • US2019873A - Bag closure : en
  • US2020005A - Brake lever : en
  • CA353944A - Cigarette manufacture : en fr
  • US2019853A - Combined tool box and foot rest : en
  • US2019645A - Electrically ignited liquid fuel : en
  • US2020237A - Reminding register : en
  • CA354008A - Spring structure : en fr
  • DE621407C - Payment tray : de en
  • AU2054534A - An improved means for filtering liquids : en
  • FR789928A - Insulating device with one or more electrical insulators with internal conduits and its applications : en fr
  • CA353878A - Single deck bus : en fr
  • DE602844C - Procedure for eliminating interference in electrical communication by means of character transmission : de en
  • US2019493A - Machine for threading can covers : en
  • US2019988A - Tire cover : en
  • US2020177A - Method of manufacturing slip sheets : en
  • US2019615A - Sound transmission system : en
  • GB437776A - Improved apparatus for detecting imperfections in an insulating coating placed around a metal pipe line : en
  • GB437854A - Improvements in closures for packing containers : en
  • CA353921A - Refrigerating system : en fr
  • US2019568A - Process of tanning : en
  • AU2279835A - Method of producing therapeutically valuable alcohols from germinal gland hormones : en
  • DE621337C - Switch tap at the bottom of a measuring vessel : de en
  • US2020214A - Article made from synthetic resins, rubber, and other like moldable substances : en
  • US2020222A - Machine table insert : en
  • CA353902A - Erasing shield : en fr
  • DE621394C - Process for the production of azo dyes : de en
  • CA353982A - Impulse recording and reproducing apparatus : en fr
  • AU1993134A - Therapeutically valuable alcohols anda method of producing thesame from germinal gland hormones : en
  • US2019917A - Elevator leveling control : en
  • US2019979A - Clock : en
  • CA354019A - Cellulose ester production : en fr
  • DE621451C - Process for dyeing animal fibers : de en
  • GB437889A - Improvements in metal vapour electric discharge vessels : en
  • DE616249C - Device for removing branches from trees : de en
  • FR789814A - Improvements made to steerable wheel supports for aircraft, in particular to crutch wheel supports for airplanes : en fr
  • GR5500B - CONIC CONFRACTOR WITHOUT FRICTION AFTER ADJUSTABLE SCREW FOR ALL KINDS OF TAPS AND WINDOWS WITH LIQUID OR RENOTON. : el en
  • DE621599C - Process for the production of carbon black from carbon oxide : de en
  • DK50857C - Line block coupling for Two- or Multi-concept signals. : da en
  • AU2134235A - Method of and means for packing eggs : en
  • CA353905A - Pulp shredder : en fr
  • US2020221A - Combined water heater and heat deflector attachment for furnaces : en
  • US2019574A - Weighing, blending, elevating, and sifting machine : en
  • US2020211A - Loud speaker : en
  • USD97418S - Design for a golf club : en
  • US2020093A - Air conditioning apparatus utilizing ice : en
  • DK50854C - Heat Exchange Apparatus and Procedure for its Manufacture. : da en
  • US2019870A - Box : en
  • US2020243A - Yarn spool : en
  • CA353923A - Radio signalling apparatus : en fr
  • DE621292C - Process for the production of acetaldehyde from acetylene : de en
  • FR789793A - Ski rack : en fr
  • FR789918A - Electric switch : en fr
  • DE621412C - Fuel piston pump for injection internal combustion engines : de en
  • US2019943A - Dispensing receptacle : en
  • US2020190A - Tire : en
  • US2019546A - Oxide cathode and method of making same : en
  • US2019896A - Recovery control : en
  • DE621550C - Veneer knife machine : de en
  • GB438113A - Improvements in illuminated signs : en
  • FR789972A - Convertible armchair : en fr
  • FR789980A - Machine for spraying plasters to obtain granulated surfaces on so-called Tyrolean facades : en fr
  • CA353911A - Photographic emulsion : en fr
  • US2019821A - Heddle frame : en
  • US2019830A - Soluble ortho-hydroxyazo dye and its production : en
  • FR789942A - Process for processing unexposed photographic films : en fr
  • GB438011A - Improvements relating to nuts : en
  • CA353960A - Coffee bean decaffeinating process : en fr
  • DE621285C - Adjustable closure, especially for veils, hairdressing hoods, etc. like : de en
  • GB437910A - Improvements in or relating to aircraft : en
  • DE621371C - Scissor-like handle for holding, gripping and sinking urns : de en
  • USD97379S - Design for an instrument case : en
  • FR789925A - Improvements in textile printing : en fr
  • FR789971A - Toy boats : en fr
  • GB438025A - Improvements in or relating to the manufacture of azo dyestuffs : en
  • USD97389S - Design for a covered jar : en
  • CA353987A - Type impression inking device : en fr
  • US2020135A - Running board : en
  • FR789935A - Cable outlet outside the motor in electrically operated submersion pump units for drilled wells : en fr
  • FR789602A - Process for improving gelatin : en fr
  • FR789919A - Improvements in refining fats and crude fatty oils : en fr
  • FR789987A - Protective system for cathode ray tubes : en fr
  • DE621225C - Calculator with step-by-step drive wheel : de en
  • US2019993A - Scarf holder for garments : en
  • DE621465C - Circuit arrangement for the automatic gain control : de en
  • DE621578C - Process for etching wool dyes with sulfoxylate : de en
  • GB438034A - Improvements in and relating to interconvertible tables and other articles of furniture : en
  • GR5492B - ROTARY SURGICAL KNIFE. : el en
  • GB437772A - Improvements in and relating to electric motor control systems : en
  • DE621369C - Process for the preparation of water-soluble dyes of the anthraquinone series : de en
  • DE621607C - Conveyor basket lock : de en
  • DE621580C - Process for the production of ammonium chloride and ammonium sulphate : de en
  • GB437794A - Improved wind-direction indicator for aerodromes and analogous situations : en
  • GB437994A - Improvements in processes for the carburization of pig iron : en
  • DE621253C - Method of manufacturing stereotype plates from zinc alloys by injection molding : de en
  • DE621383C - Drive mechanism for the film reels in cinema sets : de en
  • FR789737A - Electromagnetic apparatus, suitable in particular for the transformation of vibrations and its manufacturing process : en fr
  • FR789768A - Flexible screen frame for continuous draw machines or others : en fr
  • GB437873A - Improvements in the manufacture and production of glutamine : en
  • US2020097A - Mercury turbine condenser arrangement : en
  • US2020165A - Supporting means fob a gyroscope : en
  • US2020167A - Oil burner controlling apparatus : en
  • US2019742A - Workholder for sharpening machines : en
  • US2020261A - Reed musical instrument : en
  • CA353906A - Locomotive : en fr
  • US2019525A - Combined oil burner and air conditioning device : en
  • US2019723A - Regulating device : en
  • US2019669A - Drill : en
  • US2019989A - Cord take-up and control apparatus : en
  • US2020014A - Folding furniture leg : en
  • DE621404C - Process for the production of intermediates for dyes of the polymethine series : de en
  • US2019698A - Device for illuminating lenticulated films from the side of the photographic layer : en
  • US2019699A - Folding trigger for shutters : en
  • GB437677A - Improvements in means for securing pens and pencils to wearing apparel : en
  • DE620040C - Roller for grinding and mixing purposes : de en
  • US2019969A - Pump : en
  • DE621283C - Process for the manufacture of firebricks : de en
  • DE621598C - Process for the production of metal-containing dyes : de en
  • DK50852C - Procedure for Manufacturing Paintbrushes and Brushes. : da en
  • US2019875A - Apparatus for making ice cream suckers : en
  • US2020114A - Control system : en
  • US2020279A - Fire alarm box attachment : en
  • FR789676A - Process for degreasing animal hides and skins : en fr
  • US2019578A - Fuel supply system : en
  • FR789845A - Non-stepped transformer : en fr
  • FR789999A - Driving or receiving propeller : en fr
  • GB437901A - Improvements in and relating to potters' ovens and the like : en
  • US2019904A - Ventilator : en
  • FR789855A - Improvements to vacuum cleaning devices : en fr
  • FR789779A - Progressive speed variator or dynamic balance : en fr
  • US2019508A - Aircraft braking wheel structure : en
  • DE621316C - Back transmission device on sprocket calculating machines : de en
  • GB437757A - Improvements in or relating to process of and apparatus for producing heat and cold : en
  • US2019621A - Imitation pig skin fabric glove : en
  • US2020163A - Safety clip snap for bracelets and the like : en
  • US2019518A - Strip stock feeding and gauging : en
  • CA353968A - Electric discharge lamp : en fr
  • GB437991A - Improvements relating to rubbing boards for use in washing : en
  • US2019790A - Valve seat dressing device : en
  • DE621573C - Board luffing crane : de en
  • GB437796A - Improvements in or relating to endless track vehicles, particularly tractors : en
  • DE620814C - Bank reinforcement for river and canal banks : de en
  • FR789674A - Process for filling containers with solid radioactive substances : en fr
  • FR789711A - Gun mounting in airplanes with the gun resting against the engine : en fr
  • DE621184C - Device for conveying in shafts with an endless conveying means with divided buckets : de en
  • FR789643A - Process for the production of alkyd resins and products obtained : en fr
  • US2019646A - Automobile heater : en
  • US2019682A - Reproducing wood graining and surface designs : en
  • US2019785A - Process for the production of metal from ores : en
  • GB437658A - Improvements in or relating to the treatment of platinum contact masses : en
  • DE621352C - Electromagnetically operated direction indicator : de en
  • DE621272C - Game device for electric musical instruments : de en
  • DE621026C - Chain stitch shoe sewing machine with straight hook needle, horn and whorl : de en
  • US2019895A - Suction cleaner : en
  • US2020060A - Pressing pad : en
  • US2019683A - Self-starting synchronous electric motor : en
  • US2019655A - Automobile lock and locking mechanism : en
  • FR789981A - Automatic scale for weighing and bagging all products : en fr
  • DE621584C - Device for fastening the blade ring for radially loaded turbines : de en
  • US2020130A - Vehicle headlight lamp : en
  • FR789952A - Mechanical inflatable rubber figures : en fr
  • US2019980A - Method and composition for producing a cold glaze having a dispersing agent therein : en
  • US2020152A - Inked ribbon with uninked end : en
  • USD97436S - Design for a burial casket : en
  • CA353956A - Tractor planter : en fr
  • GB437872A - Improvements in agricultural rotary cultivator devices : en
  • FR789930A - Wall anchor : en fr
  • US2019718A - Differential treatment of color component images : en
  • US2019986A - Tire cover construction : en
  • US2019514A - Hammer for crushing machinery : en
  • US2019643A - Engine : en
  • FR789802A - Carburetor improvements : en fr
  • GB437932A - Improvements in or relating to sheet metal piles : en
  • GB437990A - Improvements in and connected with water heaters : en
  • USD97378S - Design for a collar holder : en
  • DE621488C - Welded connection of pipes : de en
  • US2019858A - Removable closure assembly for pneumatic carriers : en
  • US2019832A - Reactions of sodium with hydrocarbons : en
  • DE621391C - Closure means for the ring-shaped sludge outlet opening of a full-walled centrifugal drum : de en
  • FR789755A - Method and apparatus for stereoscopic cinematographic shooting and projection : en fr
  • US2019696A - Shoe press : en
  • US2020016A - Accessory attachment for telephones : en
  • FR789836A - Lift for motor vehicles and others : en fr
  • FR789902A - Submerged dormant mine : en fr
  • GB437718A - Improvements in and relating to the production of hydraulic binding materials : en
  • GB437941A - Improvements in and relating to apparatus for receiving goods at houses and other places : en
  • FR789653A - Device for returning lubricant to the suction chamber of a compressor : en fr
  • US2019593A - Table automatic distributor for goods : en
  • US2019937A - Method of casting bars : en
  • US2019566A - Ice cream disher : en
  • US2019734A - Fountain pen : en
  • US2020105A - Automatic piloting device : en
  • US2020123A - Variable speed transmission : en
  • DE621309C - Process for the production of solutions of poorly soluble oxalates of the rare earths : de en
  • FR789798A - Compressor group, vacuum pump, distributor : en fr
  • FR789891A - Improvements to electrical machines fitted with a cooling jacket : en fr
  • US2019874A - Humidifying apparatus : en
  • US2019520A - Method and means for joining individual wires in two ropes to make a single rope : en
  • US2019814A - Fluid operated chuck : en
  • DE621595C - Collector-like interrupter for small electric motors : de en
  • US2020030A - Pressing element for pressing machines : en
  • USD97402S - Design for a building : en
  • DE621321C - Fuel feeder : de en
  • DE621306C - Rubber-free varicose vein stocking and process for its production on the flat knitting machine : de en
  • FR789730A - Application of a method of automatic wetting of the sheet of paper in tobacco cases, the cover of which comprises a cigarette mold : en fr
  • FR789944A - Automatic phonograph record distributor : en fr
  • GB437875A - Improvements in or relating to folding beds : en
  • GB437799A - Improvements in collapsible tube construction : en
  • GB437993A - Improvements in or relating to adjustable-pitch airscrews : en
  • FR789784A - Method and device for performing movements applicable to obtaining advertising effects : en fr
  • GB437665A - Improvements in or relating to actuating mechanism for mechanical stokers : en
  • GB437959A - Improvements in or relating to containers and dispensing devices for powdered soap and the like : en
  • GB437685A - Improvements in tensioning arrangements for chain gearing : en
  • GB437781A - Improvement in rotary valves for internal combustion engines : en
  • US2019838A - Tubing head : en
  • US2020248A - Baseball mask : en