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公开(公告)号:CA385387A
公开(公告)日:1939-11-28
申请号:CA385387D
Applicant: RCA CORP
Inventor: VANCE ARTHUR W , BRANSON HARRY
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公开(公告)号:CA385387A
公开(公告)日:1939-11-28
申请号:CA385387D
Applicant: RCA CORP
Inventor: VANCE ARTHUR W , BRANSON HARRY