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 |
| 4350287 | Remote control car heater A remote transmitter is operative to start an electrical heater disposed in an automobile. The electrical heater operates off a separate electrical system from that normally found in the automobile. Once the automobile engine is started and the heating sy... | 09/21/1982 |
| 4249391 | Cooling tower vapor recovery unit Water vapor released by evaporation in a cooling tower, is conducted through an enclosure to the upper inlet end of a vertical conduit extending into the body of water stored in the cooling tower. The water vapor downflowing through the vertical conduit u... | 02/10/1981 |
