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2749392
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Patent Grant
2749392
References
Source
Patent Number
2,749,392
Date Filed
Not available
Date Issued
Tuesday, June 5, 1956
68 years ago
CPC
H04R23/00 - Transducers other than those covered by groups H04R9/00 - H04R21/00
H01J21/18 - having magnetic control means having both magnetic and electro-static control means
US Classifications
369 - Dynamic information storage or retrieval
307 - Electrical transmission or interconnection systems
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