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公开(公告)号：US2121434A
公开(公告)日：1938-06-21
申请号：US6946836
申请日：1936-03-18
Applicant: RCA CORP
Inventor： KLINEDINST MILFORD S , GUNBY OLIN B , HERBERT BELAR
IPC: H03F1/04
CPC classification number: H03F1/04
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