Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 5283731 | Computer-based classified ad system and method A computerized classified ad system and method. The system comprises a data processor including means for creating an ad database comprising a plurality of ads, each ad containing text data describing an item to be made available through the system. In a ... | 02/01/1994 |
