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公开(公告)号：US2039978A
公开(公告)日：1936-05-05
申请号：US56104031
申请日：1931-09-03
Applicant: GEN ELECTRIC
Inventor： EKKO OOSTERHUIS , GUSTAV ZECHER
IPC: H01J61/96
CPC classification number: H01J61/96
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公开(公告)号：US1951106A
公开(公告)日：1934-03-13
申请号：US56819731
申请日：1931-10-10
Applicant: GEN ELECTRIC
Inventor： EKKO OOSTERHUIS
IPC: H01J61/96
CPC classification number: H01J61/96
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