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 |
| 7423814 | Camera lens focus-setting mechanism A camera lens focus-setting mechanism enabling easy and precise focusing includes a first and a second rack member, and a first and a second adjusting assembly. The first and the second rack member are respectively associated with a first and a second focusing ring,... | 09/09/2008 |
