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公开(公告)号：US3130757A
公开(公告)日：1964-04-28
申请号：US4934460
申请日：1960-08-12
Applicant: RCA CORP
Inventor： FRANZ SCHELLACK HARRY
IPC: H01J19/00
CPC classification number: H01J19/00 , H01J2893/0026 , Y10T29/49071 , Y10T29/49121
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