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 |
| 5872511 | Electronic flasher system An electronic flasher system in which a first hazard switch is mounted on a combination switch body of a steering column together with a semiconductor switch and a flasher circuit, and a second hazard switch is mounted in a location where a person sitting... | 02/16/1999 |
| 4684918 | Lane changing signalling device A motor vehicle turn signal system has features to indicate lane changing. The system includes a flasher that supplies pulsated power to the conventional turn signal lever switch. Right and left push button switches are mounted to the steering wheel. Each... | 08/04/1987 |
| 4638290 | Electronic turn signal cancellation apparatus An electronic turn signal cancellation apparatus is disclosed which includes two separate rotational positions sensing elements, each sensing an associated identifying portion positioned on a shaft rotated in accordance with vehicle steering wheel rotatio... | 01/20/1987 |
| 4187923 | Guide wheel position indicating apparatus A cotton harvester having a hydrostaticly steered rear guide wheel assembly is provided with a steering arm having a raised horizontal segment which moves with the guide wheel. When the guide wheel off center, the raised horizontal segment contacts one of... | 02/12/1980 |
