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 |
| 6442767 | Safety helmet A safety helmet combined with a visor (3) in a detachable connection, which is formed by holding structure located on both sides at the safety helmet shell (2). Wear properties are improved by the holding structure having rigid coupling hooks (10), which ... | 09/03/2002 |
| 6282751 | Hinge connection for a container of a breathing gas supply unit in an airplane A hinge connection at a breathing gas supply unit between a container lower part (3) and a container door (4), which is fastened, pivotably around an axis, at a rear container edge (1) of the container lower part (3). The connection is provided such that ... | 09/04/2001 |
