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经营范围
发明名称
UN MÉTODO DE FABRICAR UN MATERIAL LUMINISCENTE
摘要
申请公布号
ES199674(A1)
申请公布日期
1951.11.16
申请号
ES19740001996
申请日期
1951.09.20
申请人
PHILIPS'GLOEILAMPENFABRIEKEN, N. V.
发明人
分类号
(IPC1-7):C09
主分类号
(IPC1-7):C09
代理机构
代理人
主权项
地址
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