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3457515
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Patent Grant
3457515
References
Source
Patent Number
3,457,515
Date Filed
Not available
Date Issued
Tuesday, July 22, 1969
55 years ago
CPC
H01J21/36 - Tubes with flat electrodes
US Classifications
455 - Telecommunications
315 - Electric lamp and discharge devices: systems
327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
330 - Amplifiers
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