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2947875
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Patent Grant
2947875
References
Source
Patent Number
2,947,875
Date Filed
Not available
Date Issued
Tuesday, August 2, 1960
64 years ago
CPC
G05D23/2239 - using photoelectric elements
US Classifications
250 - Radiant energy
219 - Electric heating
327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
331 - Oscillators
361 - Electricity: electrical systems and devices
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