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1488337
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Patent Grant
1488337
References
Source
Patent Number
1,488,337
Date Filed
Not available
Date Issued
Tuesday, March 25, 1924
100 years ago
CPC
H01J21/16 - with external electrostatic control means and with or without internal control electrodes
US Classifications
327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
313 - Electric lamp and discharge devices
315 - Electric lamp and discharge devices: systems
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