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 |
| 7197825 | Razors and shaving cartridges with guard A shaving blade unit includes a plastic housing having a front portion and a rear portion and two side surfaces extending from the front portion to the rear portion. The housing has a length extending from one side surface to the other side surface. Positioned betwe... | 04/03/2007 |
| 4985995 | Razor head, especially a razor blade unit A razor head, especially a razor blade unit, having a single or double razor blades fixedly disposed in a plastic housing and resting on a blade support of the housing. If a double razor blade is provided, a spacer is disposed between the two blades. To p... | 01/22/1991 |
