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公开(公告)号：US3419741A
公开(公告)日：1968-12-31
申请号：US54371266
申请日：1966-04-19
Applicant: THOMAS ELECTRONICS INC
Inventor： LEGENDRE VICTOR J
CPC classification number: H01J35/18 , H01J5/20 , H01J2893/0037
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