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公开(公告)号：US2728009A
公开(公告)日：1955-12-20
申请号：US19558850
申请日：1950-11-14
Applicant: RCA CORP
Inventor： FAULKNER RICHARD D , BARNES BRYCE E , GRIMES MILTON J
CPC classification number: H01J29/02 , H01J29/073 , H01J29/82
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