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公开(公告)号:US2675474A
公开(公告)日:1954-04-13
申请号:US9330349
申请日:1949-05-14
Applicant: RCA CORP
Inventor: EVERETT EBERHARD
IPC: H03B7/06
CPC classification number: H03B7/06
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公开(公告)号:US2648766A
公开(公告)日:1953-08-11
申请号:US15688150
申请日:1950-04-19
Applicant: RCA CORP
Inventor: EVERETT EBERHARD
IPC: G01R29/027 , H04N5/10
CPC classification number: H04N5/10 , G01R29/0273
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