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 |
| 4094602 | Microform card alignment device A device for uniformly aligning each of a series of microform cards with a projected test pattern, including means for moving a card relative to said test pattern, and means for perforating the card while aligned.... | 06/13/1978 |
