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2919485
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Information
Patent Grant
2919485
References
Source
Patent Number
2,919,485
Date Filed
Not available
Date Issued
Tuesday, January 5, 1960
64 years ago
CPC
H01J9/14 - of non-emitting electrodes
H01J9/16 - Machines for making wire grids
Y10T29/49881 - of separate helix [e.g., screw thread]
US Classifications
445 - Electric lamp or space discharge component or device manufacturing
029 - Metal working
313 - Electric lamp and discharge devices
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