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 |
| 4137751 | Aerial prospecting A method and apparatus are disclosed for improved collection of airborne particles in an airborne prospecting method. A high volume of air is sampled and processed through a cyclone separator to achieve a high concentration of particle collection on a col... | 02/06/1979 |
