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公开(公告)号：US3474275A
公开(公告)日：1969-10-21
申请号：US3474275D
申请日：1966-09-26
Applicant: RCA CORP
Inventor： STOUDENHEIMER RICHARD G , EZARD LAWRENCE A
IPC: H01J31/50
CPC classification number: H01J31/502
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