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2495790
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Patent Grant
2495790
References
Source
Patent Number
2,495,790
Date Filed
Not available
Date Issued
Tuesday, January 31, 1950
74 years ago
CPC
H04N1/1004 - using two-dimensional electrical scanning
H03K4/88 - using as active elements electrochemical cells or galvano-magnetic or photo-electric elements
H04N7/16 - Analogue secrecy systems Analogue subscription systems
US Classifications
348 - Television
313 - Electric lamp and discharge devices
315 - Electric lamp and discharge devices: systems
380 - Cryptography
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