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公开(公告)号：US2761543A
公开(公告)日：1956-09-04
申请号：US35524653
申请日：1953-05-15
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： BRENNECK WILLIAM A , EMERSON JOSEPH T
IPC: H01J9/46
CPC classification number: H01J9/46 , H01J2893/0096 , H01J2893/0098
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