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公开(公告)号：US2768326A
公开(公告)日：1956-10-23
申请号：US33931653
申请日：1953-02-27
Applicant: RCA CORP
Inventor： BROWN BARREMORE B , LESLIE KOVACH , SEACHRIST JOHN W
IPC: H01J25/587
CPC classification number: H01J25/587
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