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公开(公告)号：US2844769A
公开(公告)日：1958-07-22
申请号：US47003854
申请日：1954-11-19
Applicant: PHILIPS CORP
Inventor： JOHANNES ERKELENS , JAN KAMERMAN , ANTONIUS ROOVERS WILHELMUS
CPC classification number: H01L23/041 , H01L23/16 , H01L24/00
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