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公开(公告)号：US2902149A
公开(公告)日：1959-09-01
申请号：US53732255
申请日：1955-09-29
Applicant: RCA CORP
Inventor： BLUST HENRY L , STRYCH HENRY A , GEORGE VIVIAN
IPC: H01J5/32
CPC classification number: H01J5/32
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