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公开(公告)号：US2888590A
公开(公告)日：1959-05-26
申请号：US45553154
申请日：1954-09-13
Applicant: GEN ELECTRIC
Inventor： TAYLOR CHARLES L
IPC: H01J21/02
CPC classification number: H01J21/02
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公开(公告)号：US2942137A
公开(公告)日：1960-06-21
申请号：US69698657
申请日：1957-11-18
Applicant: GEN ELECTRIC
Inventor： TAYLOR CHARLES L
IPC: H01J1/26
CPC classification number: H01J1/26
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