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公开(公告)号：US2342492A
公开(公告)日：1944-02-22
申请号：US43763842
申请日：1942-04-04
Applicant: RCA CORP
Inventor： RANKIN JOHN A , NEWLON ARTHUR E
IPC: H03F1/08
CPC classification number: H03F1/08
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