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公开(公告)号：US2890359A
公开(公告)日：1959-06-09
申请号：US43692354
申请日：1954-06-15
Applicant: PHILIPS CORP
Inventor： LEOPOLD HEIJNE , JAN DORRESTEIN , HAJO BRUINING , PIETER SCHAGEN
CPC classification number: H01J29/456 , H01B1/08 , H01J29/45 , H01L21/00 , Y10S257/917
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