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公开(公告)号：US2928981A
公开(公告)日：1960-03-15
申请号：US51194055
申请日：1955-05-31
Applicant: RCA CORP
Inventor： MICHAEL KOLESNIK , ERNEST SMALL CHARLES
IPC: H04N9/28
CPC classification number: H04N9/28
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