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公开(公告)号：US3245132A
公开(公告)日：1966-04-12
申请号：US33437663
申请日：1963-12-30
Applicant: RCA CORP
Inventor： THALER FRANK H
CPC classification number: H01J9/08 , B21F3/04 , B21F17/00 , B21F45/00 , Y10T29/49016 , Y10T29/49071
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