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公开(公告)号：US1971805A
公开(公告)日：1934-08-28
申请号：US61589732
申请日：1932-06-07
Applicant: GEN ELECTRIC
Inventor： ALBERT AMILLAC
IPC: H01J13/12
CPC classification number: H01J13/12 , H01J2893/008
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公开(公告)号：US2056140A
公开(公告)日：1936-09-29
申请号：US47200830
申请日：1930-07-31
Applicant: GEN ELECTRIC
Inventor： ALBERT AMILLAC
IPC: H01J13/26
CPC classification number: H01J13/26 , Y10S277/919 , Y10T403/478
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