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公开(公告)号：US3263108A
公开(公告)日：1966-07-26
申请号：US31147463
申请日：1963-09-25
Applicant: RCA CORP
Inventor： DE MURO THOMAS M
IPC: H01J21/20
CPC classification number: H01J21/20 , H01J2893/003
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