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公开(公告)号:US2157722A
公开(公告)日:1939-05-09
申请号:US20720038
申请日:1938-05-11
Applicant: WESTINGHOUSE ELECTRIC & MFG CO
Inventor: HUBERT WENDLIK
IPC: H01J5/24
CPC classification number: H01J5/24 , H01J2893/0038
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公开(公告)号:US2151885A
公开(公告)日:1939-03-28
申请号:US12320437
申请日:1937-01-30
Applicant: LORENZ C AG
Inventor: OTTO BAIER
CPC classification number: H01J5/24 , H01J19/42 , H01J2893/0002 , H01J2893/0038
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公开(公告)号:US2137069A
公开(公告)日:1938-11-15
申请号:US12374137
申请日:1937-02-03
Applicant: SIEMENS AG
Inventor: HANS VATTER
IPC: H01J5/24
CPC classification number: H01J5/24 , H01J2893/0038 , Y10T403/479
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