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公开(公告)号：US2445077A
公开(公告)日：1948-07-13
申请号：US44838242
申请日：1942-06-25
Applicant: RCA CORP
Inventor： NERGAARD LEON S , BURNSIDE DON G , LOUIS PENSAK
IPC: H01J21/06
CPC classification number: H01J21/065
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