...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 |
| 7441980 | Device for joining two components with tolerance compensation A device for joining a first component A and a second component B while leaving a joining gap SP includes a bolt 4 and a compensating coil 2 for compensating tolerances of the joining gap. The compensating coil is adapted to be fixed to the bolt 4 | 10/28/2008 |
| 7096577 | Explosively actuated tools A firing mechanism of an explosively actuated tool for driving a fastener into a substrate includes a cocking rod and sear for entraining the firing pin with the firing pin being releasable on cocking by rotation of the sear. The cocking rod and sear form a structur... | 08/29/2006 |
| 6705601 | Self-compensating spiral spring for a mechanical balance-spiral spring oscillator This self-compensating spiral spring for a mechanical balance-spiral spring oscillator for a watch or clock movement or other precision instrument, made of an Nb—Hf paramagnetic alloy possessing a thermal coefficient of Young's modulus (TCE), such that it enables ... | 03/16/2004 |
| 6422547 | Torsion coil spring A spring suitable for use in bedding construction, including mattresses, mattress-bases and the like which is able to achieve a variety of spring heights and resiliences using the same thickness of wire. The spring includes a first leg (2), a first upper ... | 07/23/2002 |
| 6056280 | Auto-loading lift spring for an electronic device A lift spring assembly is disclosed for small computers and similar electronic devices of the type that has a base and an upper component assembly that raises when a release is pressed to provide access to computer devices such as printing, data storage a... | 05/02/2000 |
| 5690322 | Shock and vibration damping mount This is a shock- and/or vibration-damping mount (9) between a first and snd mass. It comprises a substantially straight cable comprising a plurality of multiwire strands, the cable comprising at least one portion (25) having a bulged middle part (26) for... | 11/25/1997 |
| 5445364 | Load counterbalancing coiled wire spring assembly A load counterbalancing coiled wire spring assembly adapted to provide predetermined nonuniform bending stress induced torsional load supporting force in response to load induced longitudinal spring wire displacement.... | 08/29/1995 |
| 5186423 | Fallable type pole supporting device The present invention discloses a fallable type pole supporting device comprising a wire extending in a longitudinal direction of a pole extended to a mounting side end of a pole member. A resilient member is disposed between an extreme end of the wire an... | 02/16/1993 |
| 5120032 | Multi-rate anti-buckling twisted rope torsion bar A tube received about a twisted rope torsion bar prevents buckling of the latter and also acts to increase the spring rate.... | 06/09/1992 |
| 4869704 | Toy Spring-like element for use as a toy or the like consisting of a coil of copper tape of high width-to-thickness ratio forming an elongated frusto-conical structure that exhibits spring characteristics combined with dry friction damping.... | 09/26/1989 |
| 4524482 | Unitary resilient bearing support A resilient bearing support is provided for suitcase rollers and the like. A single part made of resilient material is configured to rotatably support travel rollers in a lower fork-like projection. The tip of this part is connected to a lower corner of a... | 06/25/1985 |
| 4482137 | Compartment shade A trunk shade for an automotive luggage compartment having a central torque tube removably installed and held against rotation in fixed mounting brackets in which a torsional windup spring accommodating shade extraction and retraction has a prewind retent... | 11/13/1984 |
| 4446653 | Device for supporting and rotating a hanging plant A device for supporting a hanging plant and for slowly rotating it to expose different sides to sunlight. The device comprises a cord for attachment at one end to a hook or other fixed object and for attachment at the opposite end to the plant. The cord e... | 05/08/1984 |
| 3966006 | Dual spring rear suspension for motorcycles A rear suspension for motorcycles which employs primary and secondary torsion springs operating on the rotative axis of the horizontally disposed and rearwardly trailing fork carrying the powered traction wheel. The two springs are of selected resilience ... | 06/29/1976 |