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 |
| 4665598 | Eyeglass frame decorated with stained-glass patterns and method of making the same An eyeglass frame (10) consisting of outside and inside synthetic-resin members (20, 25), a metallic-plate core member (12) sandwiched in between the outside and inside members, the core member (12) being partly formed with a plurality of holes (16) which... | 05/19/1987 |
