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公开(公告)号：US2713644A
公开(公告)日：1955-07-19
申请号：US44010954
申请日：1954-06-29
Applicant: RCA CORP
Inventor： PAUL RAPPAPORT
CPC classification number: H03F3/04 , H01G9/20 , H01L29/00 , H01M14/005
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