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3317771
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Patent Grant
3317771
References
Source
Patent Number
3,317,771
Date Filed
Not available
Date Issued
Tuesday, May 2, 1967
57 years ago
CPC
H01J40/16 - having photo- emissive cathode
H01J9/02 - Manufacture of electrodes or electrode systems
H01J40/04 - Electrodes
US Classifications
313 - Electric lamp and discharge devices
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