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1342399
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Patent Grant
1342399
References
Source
Patent Number
1,342,399
Date Filed
Not available
Date Issued
Tuesday, June 1, 1920
104 years ago
CPC
H01J21/16 - with external electrostatic control means and with or without internal control electrodes
US Classifications
329 - Demodulators
313 - Electric lamp and discharge devices
315 - Electric lamp and discharge devices: systems
331 - Oscillators
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