Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 4465704 | Heat-sink imaging method and apparatus for recording surface topology The recording of surface topology is obtained by first bringing the surface into contact with the imaging material-coated side of a dry process dispersion type recording film comprising a transparent substrate on which is coated a very thin, high optical ... | 08/14/1984 |
| 4333678 | Truck bed liner assembly A knockdown bed liner assembly for pickup-type trucks comprising interconnectable floor, side and front panels, and a separate tailgate panel. The floor and side panels are shaped to accommodate the wheel wells of a truck, and the floor panel is provided ... | 06/08/1982 |
| 4277511 | Sweetener and flavoring compositions and method of producing same Sweetener and flavoring compositions containing as an active or essential natural flavoring agent or flavoring intensifier, fully ammoniated salts or monoammoniated salts of glycyrrhizic acid, said compositions also containing a major proportion of a carr... | 07/07/1981 |
| 4271257 | Imaging film of bismuth or bismuth alloy An imaging film, and a method of making it, comprising a flexible plastic substrate having a thin, high optical density, continuous layer of bismuth, or an alloy of bismuth, deposited on a surface thereof. The bismuth layer has a roughened outer surface. ... | 06/02/1981 |
| 4268793 | Noise eliminating circuit A noise eliminating circuit comprising means for generating a signal having a phase difference with respect to an input signal, means for simultaneously cutting off the input signal and the phase difference signal at the time when a noise is entering the ... | 05/19/1981 |
| 4267261 | Method for full format imaging In a method for full format imaging, a solid continuous film of a dispersion imaging material is provided on a substrate and it disperses into a discontinuous film comprising space globules and free space therebetween through which free space light can pa... | 05/12/1981 |
| 4264083 | Splash guard A splash guard or mud flap comprising a flexible, splash-intercepting body portion which may be fabricated of a material such as rubber or plastic or metal, and which is supported on and maintained in a preselected position on the fender of a vehicle by m... | 04/28/1981 |
| 4260250 | Imaging apparatus Dry-process imaging apparatus for flash imaging an imaging film having a layer of an energy dispersible image forming material on a surface thereof. The apparatus comprises a source of electromagnetic or radiant energy, radiant energy collecting and guidi... | 04/07/1981 |
| 4254389 | Pushbutton tuner having tapering portion pivotal pins A pushbutton tuner wherein a plurality of tilting actuating links are provided for a slide member for causing cores to move in-and-out of coils and the actuating links are adapted to engage setting pins of frequency regulating members respectively, which ... | 03/03/1981 |
| 4252058 | Wood truss forming apparatus Apparatus for forming a wood roof truss, or the like, comprising a system which includes a wood member positioning and upper fastening means engaging station for arranging and maintaining wood members in positions corresponding to the ultimate positions o... | 02/24/1981 |
| 4246564 | Method of assembling a normally closed thermally actuated cut-off link and the link made thereby A method of assembling a normally-closed ambient thermally actuated switch comprises assembling into the open end of a casing a sandwich of elements including a meltable pellet, one or more springs, a backing member and a contact arm-deforming member whic... | 01/20/1981 |
| 4242439 | Dispersion imaging utilizing plural layers of different metal components A dry process high sensitivity imaging film includes a solid, high optical density and substantially opaque film of dispersion imaging material deposited on a substrate. The film of dispersion imaging material comprises a plurality of separate layers of d... | 12/30/1980 |
| 4240603 | Support assembly A portable support assembly for use as a floodlight lamp system, comprising a stand which includes a base member and interconnectible extensions whereby a stand of a desired height can be provided. The base member has outwardly extendible legs for maintai... | 12/23/1980 |
| 4238139 | Panel assembly A panel assembly having a handle member which is secured to a front face of an acoustic device, such as a mobile radio and a mobile stereo, together with a panel by screws.... | 12/09/1980 |
| 4237740 | Pushbutton tuner A pushbutton tuner having a tuning mechanism connected through a releasable clutch to a manual dial selector and connectable to a pushbutton selector including a button slide and an actuating member, wherein specific means for ensuring the resetting of th... | 12/09/1980 |
| 4233530 | Elastic surface wave device An elastic surface wave device, especially amplifier which includes input and output means for electrical signals provided so as to be spaced on a surface of a piezoelectric material which composes a laminate in combination with a semiconductor, and an el... | 11/11/1980 |
| 4232966 | Contact lens device A device for supporting a contact lens in any desired position with relation to an optical instrument to enable the parameters of the lens, especially the curvature and/or the axes of the surfaces of the lens, to be analyzed. The device comprises a base m... | 11/11/1980 |
| 4229323 | Nor-dehydropatchoulol Nor-dehydropatchoulol having the formula I is disclosed. ##STR1## This previously unknown compound has been extracted from natural Patchouli Oil. It can be used in odorant compositions such as perfumes, detergents, aerosols, cosmetic products, etc.... | 10/21/1980 |
| 4226898 | Amorphous semiconductors equivalent to crystalline semiconductors produced by a glow discharge process A method of making an amorphous semiconductor film or the like having desirable photoconductive and/or other properties comprises depositing on a substrate a solid amorphous semiconductor film including at least one element, by glow discharge decompositio... | 10/07/1980 |
| 4226523 | Imaging device An imaging device for flash imaging, through an imaging mask at an imaging film plane, a dry-process imaging film having a layer of an energy dispersible image forming material on a surface thereof. The device comprises electromagnetic energy collecting m... | 10/07/1980 |
| 4226522 | Imaging device A device for flash imaging, through an imaging mask at an imaging film plane, a dry-process imaging film having a layer of an energy dispersible image forming material on a surface thereof. The device comprises a solid, electromagnetic energy transmitting... | 10/07/1980 |
| 4226044 | Drive-in teller coin bank A coin bank comprises a vehicle movable horizontally along an appreciable portion of the length of a support base, the vehicle having a coin-receiving slot in the top thereof. The vehicle interior has a pivotably mounted coin-receiving member which receiv... | 10/07/1980 |
| 4227224 | Cassette tape recording/reproducing apparatus A cassette tape recording/reproducing apparatus which is so adapted that after a cassette is horizontally pushed deep into a pack guide, the pack guide is lowered in a vertical direction to set the cassette in a recording/reproducing position on a bottom ... | 10/07/1980 |
| 4224590 | Magnetic-technical system with a magnetic circuit comprising at least two magnets Magnetic-technical systems useful in magnetic separators for separating magnetic materials from liquid or dry materials containing magnetic particles. The magnetic technical systems are characterized by possessing one magnetic circuit comprising at least ... | 09/23/1980 |
| 4224647 | Magnetic tape-record/playback apparatus A magnetic tape-record/playback apparatus having a mechanism for fast forward/rewind operation, which is formed of an ejecting lever and plate which are provided separately from each other but slidably connected with each other, a spring provided between ... | 09/23/1980 |
| 4220070 | Nailing strip for nails to be driven therefrom A nailing strip for use in a nailing machine comprises an elongated stamped and formed sheet metal strip of nails which includes a plurality of substantially rectangular nail heads integrally interconnected along the length of the strip by integral interc... | 09/02/1980 |
| 4217374 | Amorphous semiconductors equivalent to crystalline semiconductors A method of making an amorphous semiconductor film or the like having desirable photoconductive and/or other properties comprises forming an amorphous semiconductor film, preferably by vaporizing silicon or the like in an evacuated space and condensing th... | 08/12/1980 |
| 4217042 | Camera for different speed films A camera for receiving a cartridge containing relatively high or low speed films has an adjustable aperture mechanism for regulating the amount of light exposing the film, and a manual control mechanism operatively associated therewith and movable between... | 08/12/1980 |
| 4213687 | Film advancing mechanism A film advancing mechanism comprises a planetary gear train including preferably an annular film winding gear having internal teeth meshing with an eccentrically mounted gear carried by a drive gear which rotates in one direction and the other as a manual... | 07/22/1980 |
| 4211008 | Oral device A device adapted to be placed in the human mouth for treating among other things temporomandibular joint dysfunctions comprising an elongated flexible plastic body having occlusal portions at the extremities thereof, the occlusal portions being interconne... | 07/08/1980 |
| 4211838 | Method of high sensitivity imaging and imaging film therefor A dry process high sensitivity imaging film includes a solid, high optical density and substantially opaque film of dispersion imaging material deposited on a substrate. The film of dispersion imaging material comprises a plurality of separate layers of d... | 07/08/1980 |
| 4211114 | Indicating thermometer An indicating thermometer comprises a molded single piece main member including a disc-like portion and a hollow stem portion having an end wall, and a temperature responsive assembly including a shaft, a plug and a bimetallic helical coil having its ends... | 07/08/1980 |
| 4209812 | Tape player A tape player having two belts wound around a motor shaft, with one further wound around flywheels provided with capstans and another further wound around a reel shaft drive system, said flywheels and said reel shaft drive system being adapted to be separ... | 06/24/1980 |
| 4207432 | Noise eliminating system A system for eliminating a noise from a stereo signal is disclosed comprising first and second signal paths to which an input stereo signal is applied simultaneously, storage means provided in the first signal path for storing an audio signal component, a... | 06/10/1980 |
| 4206191 | Preparation of lithium amide A low temperature method of preparing finely divided lithium amide. A mixture is first formed of bulk pieces of lithium metal with a catalyst such as active metallic cobalt in an inert liquid aromatic hydrocarbon, such as toluene, at about 0° C. to about... | 06/03/1980 |
| 4205387 | Data storage and retrieval system A data storage and retrieval system is provided utilizing digital or analog data input signals to energize one or more data recording heads which can produce a selection of sizes of alpha-numeric, pictorial or digital coded images on a recording medium. W... | 05/27/1980 |
| 4201428 | Cabinet assembly A knockdown cabinet assembly, including as an optional feature a side table or shelf assembly. The assembly has side panels, a rear or back panel, and bottom and top crosspieces which are interengaged without the need for conventional fastening means such... | 05/06/1980 |
| 4199615 | Dry-process imaging film and method A dry-process imaging film which is sensitive to, and substantially simultaneously imaged and developed by, electromagnetic radiation above a threshold value applied thereto through an imaging mask. The film, in its preferred form, comprises a thin solid ... | 04/22/1980 |
| 4196691 | Manually rotatable control or selector knob member Manually rotatable control or selector knob member adapted to be connected to an operating shaft for an electrical or electronic device, such as a rotary switch, a volume control, etc., said operating shaft having a forward end portion fluted in the longi... | 04/08/1980 |
| 4196529 | Teaching device and method A teaching device especially suitable for use in teaching reading at the elementary school level. The device, in its preferred form, comprises a lesson sheet on one side of which words are arranged in a preselected pattern. A window card is provided and i... | 04/08/1980 |
