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公开(公告)号：US2711690A
公开(公告)日：1955-06-28
申请号：US23197851
申请日：1951-06-16
Applicant: RCA CORP
Inventor： FREEDMAN NORMAN S , HOWARD ROSENTHAL
IPC: H01J9/227
CPC classification number: H01J9/2277
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公开(公告)号：US3152900A
公开(公告)日：1964-10-13
申请号：US77406258
申请日：1958-11-14
Applicant: RCA CORP
Inventor： KAUS PETER E , HOWARD ROSENTHAL
CPC classification number: H01J29/187 , H01J9/2272
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