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公开(公告)号：US3136027A
公开(公告)日：1964-06-09
申请号：US12422461
申请日：1961-07-14
Applicant: RCA CORP
Inventor： BELTZ WILLIS F , HOWE THOMAS J
IPC: H01J23/16
CPC classification number: H01J23/165
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