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 |
| 4092929 | Transport installation with triple grip for coupling the vehicles to haulage cables Transport installation comprising individual passive vehicles each equipped with a triple grip for coupling the vehicle to a main haulage cable extending along the track or to auxiliary haulage cables for instance acceleration and deceleration cables in a... | 06/06/1978 |
