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发明名称
摘要
申请公布号
DE1941580(B2)
申请公布日期
1978.04.06
申请号
DE19691941580
申请日期
1969.08.16
申请人
N.V. PHILIPS' GLOEILAMPENFABRIEKEN, EINDHOVEN (NIEDERLANDE)
发明人
DRIESSENS, FERDINAND CLEMENS MARIA, NIJMEGEN;GILLER, HENRICUS FRANCISCUS JOHANNES IGNATIUS;VEENEMAN, DIRK
分类号
C01G49/00;C04B35/26;H01F1/34;(IPC1-7):C04B35/26
主分类号
C01G49/00
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