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 |
| 5164897 | Automated method for selecting personnel matched to job criteria An automated method for selecting personnel which includes the step of selecting a first set of employees having qualifications matching a first job criteria from a first data file where the first data file includes a first plurality of records and each r... | 11/17/1992 |
| 3947978 | Educational learning device An answer card and an educational device are disclosed wherein a flexible card has answer selection points on a first side and at least one electrically conductive ink spot on the second side opposite a selection point. The electrically conductive ink spo... | 04/06/1976 |
