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 |
| 6470143 | Heating door with spring-mounted heaters A heating door comprises a frame. A first panel is mounted to the frame. A second panel is mounted to the frame. A sheet is disposed between the first and second panels. The sheet defines an inner section between the first panel and the sheet and an outer... | 10/22/2002 |
| 5295531 | Air conditioner with outside air introduction path An air conditioner having a partition for partitioning the inside thereof into indoor and outdoor sections with an intake port. A damper is provided at the intake port so that an outdoor air introduction path of the outdoor section and an outdoor air disc... | 03/22/1994 |
| 5296678 | Vehicle sun visor having an electric fan and heater assembly for clearing the vehicle windshield The conventional sun visor of a vehicle is provided with a fan system including a heater for defrosting and defogging the vehicle windshield. The fan system includes a fan subassembly body mounted in an opening in the sun visor by a retainer subassembly i... | 03/22/1994 |
| 5160827 | Automotive windshield deice apparatus A flexible sheet member is mounted to an interior surface of a vehicular windshield, with the sheet member including a serpentine resistance heater directed therethrough in electrical communication with the associated vehicle. A rheostat effects selective... | 11/03/1992 |
| 4163144 | Heated doors A heated door is formed by two wooden face panels rendered fire-resistant, which are spaced apart by laths which define flues at the base of which are arranged one or more electrical heating elements. Openings are formed in the upper part and the lower pa... | 07/31/1979 |
