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公开(公告)号：US1994740A
公开(公告)日：1935-03-19
申请号：US65593833
申请日：1933-02-09
Applicant: RCA CORP
Inventor： LEE YOUNG LLOYD , LESLIE FINCH JAMES
IPC: H03L1/04
CPC classification number: H03L1/04
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