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公开(公告)号：US2411515A
公开(公告)日：1946-11-26
申请号：US48337843
申请日：1943-04-17
Applicant: INT STANDARD ELECTRIC CORP
Inventor： BRIGHAM CECIL E
IPC: H01J19/00
CPC classification number: H01J19/00 , H01J2893/001
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