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公开(公告)号：KR1019740000383B1
公开(公告)日：1974-11-12
申请号：KR1019700001424
申请日：1970-10-12
Applicant: 엔.브이.필립스글로에이람펜화브리에겐
Inventor： 루디요한반덴플라스체
IPC: H03F3/26
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