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 |
| 4516107 | Function generators The invention provides new potentiometer-type function generators that have (1) a resistance element having a two-dimensional contact surface with boundaries arranged so that a non-uniform voltage distribution is produced when the resistance element is el... | 05/07/1985 |
| 3979710 | Apparatus for adjusting and indicating the operating curve of a weather-responsive heating regulator A heating regulator which is responsive to effective outdoor temperatures and the temperature of a heated fluid supplied by a boiler. The regulator has an adjustably positionable pointer which represents a characteristic curve. The regulator includes thre... | 09/07/1976 |
