"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 4584551 | Transformer having bow loop in tubular winding A transformer comprising a core, a primary winding and a secondary winding in which one of the windings, preferably the winding with the least coils, is formed from a tubular member formed in a plurality of coils; in the preferred embodiment of a step dow... | 04/22/1986 |
| 4583718 | Nozzle for cutting beard removal A nozzle for the cutting beard removal where by means of additional heat supply the beard is liquified and blown away by the kinetic energy of a gas jet are formed by an upper and a lower nozzle plate with fuel gas discharge openings and an oxygen slot fo... | 04/22/1986 |
| 4577175 | Transformer with fluid cooled windings A transformer comprising a core, a primary winding and a secondary winding in which one of the windings, preferably the winding with the least coils, is formed from a tubular member formed in a plurality of coils in the preferred embodiment of a step down... | 03/18/1986 |
| 4549168 | Remote station monitoring system A device for monitoring the condition of a plurality of remote stations is particularly suited for monitoring the condition of smoke alarms, television antitheft devices and the like in hotels and similar institutions. The device includes a plurality of r... | 10/22/1985 |
| 4544555 | 3,20-Diketo, 6-methyl, 17-alpha-hydroxy 19-norpregna 4,6-diene, its esters and the uses thereof A novel 3,20-diketo, 6-methyl, 17-alpha hydroxy 19-norpregna-4,6-diene is disclosed, along with a method for its production from 17-alpha-hydroxy 19-nor-progesterone acetate. The 17-alpha acetic ester, and the 17-alpha saturated or unsaturated aliphatic c... | 10/01/1985 |
| 4544325 | Variable geometry device for turbine compressor outlet A variable geometry device is provided for use with the compressor outlet of a turbine engine. The turbine engine includes a support housing, a compressor contained within the support housing and having a compressed air outlet and in which a pair of space... | 10/01/1985 |
| 4542719 | Engine cooling system The present invention provides an improved cooling system for a reciprocating piston engine. The engine is of the type having at least one cylinder and a piston movable between a top dead and bottom dead center. The cooling system comprises a housing or c... | 09/24/1985 |
| 4542658 | Torque measuring device A torque measuring device is provided for measuring the engine torque of an engine having an output shaft and connecting through a gear box having a planetary gear arrangement to a load. The torque measuring device comprises a hub having an axis and suppo... | 09/24/1985 |
| 4539812 | Air cooled exhaust valve An air cooled exhaust valve provided primarily for use with an internal combustion engine, or the like. The valve is of the type having an elongated stem and an enlarged head formed at one end of the stem. The stem is axially slidably mounted within a hou... | 09/10/1985 |
| 4539116 | Paint filter An in line filter assembly is provided for use in conjunction with a painting system having a pressurized source of liquid paint, a paint applicator and a fluid line which fluidly connects the pressurized paint source and applicator together. The filter a... | 09/03/1985 |
| 4538887 | Aspheric spectacle lens blank The present invention provides a spectacle lens blank for an aphakic eye and which is adapted to be positioned at a predetermined position in front of the eye. The lens blank includes a lens body having a posterior surface and an anterior surface. The ant... | 09/03/1985 |
| 4538637 | Freeze proof faucet A freeze proof faucet which is adapted to be mounted to an exterior wall and comprises an elongated tubular housing defining an interior housing chamber. The housing is mounted to the wall and the interior end of the housing is connected to the water supp... | 09/03/1985 |
| 4537574 | Dental articulator A method and apparatus for performing prosthodontic work comprises a face bow formed from a plate which supports impression styli which, when removed from the patient's head, is incorporated as the upper arm of the dental articulator. At least one, but pr... | 08/27/1985 |
| 4536430 | Process for the production of leather base material Leather waste is cut up into strips or portions and then subjected to working in order to break up the strips or portions into fine material and individual fibers, the fibers then being separated from the fine material. Alternatively, the strips or portio... | 08/20/1985 |
| 4535797 | Automatic shut off valve An automatic shut off valve comprising a housing having a main inlet, an outlet, a user inlet and a user outlet. A valve assembly is contained within the housing and is movable between an open and a closed position. In its open position, the user inlet an... | 08/20/1985 |
| 4535244 | Photodosimeter The present invention provides a photodosimeter for use by sunbathers and the like and which activates an alarm when a predetermined radiation dosage has been received by the user. The photodosimeter includes a photocell exposed to the sunlight and which ... | 08/13/1985 |
| 4534486 | Cover plate fastening device A fastener for connecting a cover plate to an electrical box housing comprises a prong secured to a base which is attached to the rear face of the cover plate. The fastener comprises a prong having a compressible, radially expanded portion which is receiv... | 08/13/1985 |
| 4534006 | Operating arm unit controlled by a computer system The present invention provides a computer controlled robotic arm unit having a fixed body and a carriage which is linearly movable to the fixed body along a first horizontal orthogonal cartesian axis. An elongated column is vertically movably mounted to t... | 08/06/1985 |
| 4531323 | Toy glider system A hand propelled air glider type aerodynamic toy. The toy includes an elongated fuselage, a nosepiece which acts as a balance weight, a flat plastic or styrofoam member with an offset cutout which acts as the wings of the device, and a wing adjuster which... | 07/30/1985 |
| 4531266 | Burial vault structure A burial vault includes a lid and a box portion. Depending rests are attached to the exterior bottom face of the box portion, so as to permit easy transportation of the vault. In another preferred embodiment the vault lid has recesses on its exterior face... | 07/30/1985 |
| 4530493 | Machine table fastener assembly The present invention provides a fastener assembly for use with a machine table having a work supporting surface and at least one elongated T-slot formed in the table and opened to the surface. The fastener assembly includes an elongated stud threaded at ... | 07/23/1985 |
| 4530217 | Defrosting device for a refrigerator The present invention relates to a defrosting device, for a refrigerator with a number of cooling compartments, which only supplies heat to the evaporator in the fresh food compartment when strictly necessary, that is, when fast defrosting is required, wh... | 07/23/1985 |
| 4527777 | Flame-cutting machine A flame cutting machine for dividing moving bars, particularly hot and cold billets, in continuous casting units during the casting operation. The flame cutting machine generally comprises a double jacket through which a cooling medium flows and through w... | 07/09/1985 |
| 4527369 | Door frame clip A fastener is disclosed for attaching a channel shaped fastening strip to a door frame or the like. The fastener comprises a pair of oppositely facing loops which are insertable into the channel of the facing strip and, in doing so, the loops frictionally... | 07/09/1985 |
| 4527152 | Anti-shoplifting system An electronic security system to detect the presence of an object which has had a label affixed thereto when said object passes through a surveillance zone comprising an oscillatory electromagnetic interrogation field having three separate and distinct ve... | 07/02/1985 |
| 4527018 | Support for a one-piece telephone A support for a one-piece telephone of a type incorporating in a single body all the equipment of a conventional two-part telephone, such as the apparatus, and the switch hooks normally positioned on or under the cradle for switching off the telephone whe... | 07/02/1985 |
| 4526283 | Package closure A package closure includes a stopper adapted to be sealingly engageable with the opening of the package. The closure also includes a frangible member adapted to simultaneously seal the opening and carry the stopper in a disengaged position relative to the... | 07/02/1985 |
| 4523992 | Filter assembly The present invention provides a filter assembly adapted to be connected the water discharge hose of a washing machine. The filter assembly comprises a body having a tubular inlet member and a tubular outlet member which are coaxial but axially spaced fro... | 06/18/1985 |
| 4523790 | Light weight wheel formed from sheet metal A lightweight wheel for land vehicles, particularly bicycles and motorized cycles, which provides sufficient durability for use on rough terrain. The wheel includes a central hub, a peripheral rim which retains a tire, and a plurality of extensions which ... | 06/18/1985 |
| 4523673 | Transfer device A device is disclosed for transferring workpieces from an entry station and to a predetermined position on a continuously moving conveyor. The device comprises a housing wherein at least a portion of the conveyor extends through and is movable along a pre... | 06/18/1985 |
| 4521411 | Analgesic composition An externally applicable analgesic composition comprises an extract derived from sumac leaves, sassafrass root, oak tree bark and an alcohol component, combined with benzocaine, procaine and menthol components. The topical application of this composition ... | 06/04/1985 |
| 4521194 | Method for removing incipient carious lesions and/or stain from teeth The present invention provides a method for removing incipient carious lesions and/or stain from human teeth. The method of the present invention comprises the steps of aiming a yttrium-aluminum-garnet laser so that its output inpinges upon the lesion and... | 06/04/1985 |
| 4520633 | Salad bowl A bowl for keeping displayed food chilled includes a flat lid within its interior secured to its sides, thereby defining an upper, food-containing receptacle and a lower, ice-containing chamber.... | 06/04/1985 |
| 4517815 | Insulated modular cooler An insulated modular cooler comprising in one embodiment a plurality of tubular housing sections and a plurality of tubular hollow-walled insert housings containing a refrigerant in the hollow walls of the insert housings. The tubular housing sections can... | 05/21/1985 |
| 4513997 | Fitting for an inflatable tube An end fitting for an inflatable tube motor comprising plates each having a convex portion intermediate flat end portions, a resilient bushing having an elongated body with an enlarged central portion intermediate two substantially flat portions and a tub... | 04/30/1985 |
| 4512558 | Coffin delivery system for metallurgical furnace A delivery system is provided for use in conjunction with the metallurgical furnace of the type having an elongated furnace chamber with an access door at one end for delivering a coffin containing parts into the interior of the furnace chamber. The deliv... | 04/23/1985 |
| 4512247 | Popcorn popping and coating apparatus A popcorn popping and coating machine comprising a hot air popcorn popper having a discharge chute in communication with a rotary driven receptacle. The device includes a pivoting gate which blocks passage through the chute until the popper becomes filled... | 04/23/1985 |
| 4509685 | Irrigation apparatus Irrigation apparatus comprising a vehicle to be moved between a pair of fixed positions spaced apart on the ground to be irrigated; a hose drum mounted for rotation on the vehicle; a hose wound on the drum and having an inlet end attachable to a fixed hyd... | 04/09/1985 |
| 4506163 | Starter motor housing A starter motor housing comprising a tubular housing formed by an annular wall having a thickened wall portion adjacent the stator winding of the starter motor. The stator cores abut against and are secured to the inner periphery of the thickened wall por... | 03/19/1985 |
| 4504775 | Self oscillating, single-ended flyback converter with input voltage responsive control A circuit arrangement for the controlled supply of loads, in particular portable devices, for example dry razors and electronic flash devices, or also fluorescent lamps or the like, on virtually any d.c. and a.c. systems of different frequencies and volta... | 03/12/1985 |