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1879321
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Information
Patent Grant
1879321
References
Source
Patent Number
1,879,321
Date Filed
Not available
Date Issued
Tuesday, September 27, 1932
91 years ago
CPC
H01J5/50 - Means forming part of the tube or lamps for the purpose of providing electrical connection to it
H01J21/16 - with external electrostatic control means and with or without internal control electrodes
US Classifications
313 - Electric lamp and discharge devices
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