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公开(公告)号：US3178605A
公开(公告)日：1965-04-13
申请号：US6803760
申请日：1960-11-08
Applicant: VARIAN ASSOCIATES
Inventor： ALLEN JR STANLEY E , SYMONS ROBERT S , CONNOR THOMAS J
IPC: H01J23/207 , H01J23/46 , H01J25/12
CPC classification number: H01J23/46 , H01J23/207 , H01J25/12
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