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公开(公告)号：US2207055A
公开(公告)日：1940-07-09
申请号：US14539437
申请日：1937-05-28
Applicant: RCA CORP
Inventor： GOODLING JR GEORGE G , STOCKER ARTHUR C
CPC classification number: H03K17/54 , H03G3/26 , Y10S271/901
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