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公开(公告)号：US1976397A
公开(公告)日：1934-10-09
申请号：US51654631
申请日：1931-02-18
Applicant: RCA CORP
Inventor： GILLES HOLST , JOHAN DRUYVESTEYN MARI , DE BOER JAN HENDRIK , CORNELIS TEVES MARTEN
IPC: H01J17/06
CPC classification number: H01J17/066 , H01J2893/0066
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公开(公告)号：US1899021A
公开(公告)日：1933-02-28
申请号：US41563829
申请日：1929-12-21
Applicant: RCA CORP
Inventor： JOHAN DRUYVESTEYN MARI
IPC: H05B41/39
CPC classification number: H05B41/39
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