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2058565
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Information
Patent Grant
2058565
References
Source
Patent Number
2,058,565
Date Filed
Not available
Date Issued
Tuesday, October 27, 1936
87 years ago
CPC
H03G7/02 - having discharge tubes
H03G3/24 - Control dependent upon ambient noise level or sound level
H03G9/04 - having discharge tubes
US Classifications
455 - Telecommunications
327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
330 - Amplifiers
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