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公开(公告)号：US2543246A
公开(公告)日：1951-02-27
申请号：US67826246
申请日：1946-06-21
Applicant: RCA CORP
Inventor： LANDON VERNON D , NEUMANN ALBRECHT J , SMITH LESTER C
IPC: H03H7/34
CPC classification number: H03H7/345
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