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公开(公告)号：US2128117A
公开(公告)日：1938-08-23
申请号：US58536732
申请日：1932-01-07
Applicant: GEN ELECTRIC
Inventor： CARL BRABAND
IPC: H01J13/48
CPC classification number: H01J13/48 , H01J2893/0058
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公开(公告)号：US2022534A
公开(公告)日：1935-11-26
申请号：US51323131
申请日：1931-02-03
Applicant: GEN ELECTRIC
Inventor： CARL BRABAND
IPC: H01J13/28
CPC classification number: H01J13/28 , H01J2893/0086
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公开(公告)号：US2016885A
公开(公告)日：1935-10-08
申请号：US51858931
申请日：1931-02-26
Applicant: GEN ELECTRIC
Inventor： CARL BRABAND
IPC: H01J13/14
CPC classification number: H01J13/14 , H01J2893/0082
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