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1859677
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Information
Patent Grant
1859677
References
Source
Patent Number
1,859,677
Date Filed
Not available
Date Issued
Tuesday, May 24, 1932
92 years ago
CPC
H01J19/34 - forming part of the envelope
H01J2893/0004 - Anodes formed in central part
US Classifications
313 - Electric lamp and discharge devices
439 - Electrical connectors
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