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3467878
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Information
Patent Grant
3467878
References
Source
Patent Number
3,467,878
Date Filed
Not available
Date Issued
Tuesday, September 16, 1969
54 years ago
CPC
H01J9/505 - Regeneration of cathodes
H01J1/13 - Solid thermionic cathodes
Y02W30/828 - Lighting equipment or discharge tubes
US Classifications
313 - Electric lamp and discharge devices
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