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3244990
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Information
Patent Grant
3244990
References
Source
Patent Number
3,244,990
Date Filed
Not available
Date Issued
Tuesday, April 5, 1966
58 years ago
CPC
H01J41/04 - with ionisation by means of thermionic cathodes
H01J9/38 - Exhausting, degassing, filling, or cleaning vessels
H01J41/14 - with ionisation by means of thermionic cathodes
H01J41/16 - using gettering substances
H03F3/02 - with tubes only
US Classifications
327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
313 - Electric lamp and discharge devices
315 - Electric lamp and discharge devices: systems
324 - Electricity: measuring and testing
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