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经营范围
发明名称
Procédé permettant de sceller dans le verre un objet en tungstène
摘要
申请公布号
FR859798(A)
申请公布日期
1940.12.28
申请号
FRD859798
申请日期
1939.07.03
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
C03C27/02;C22C19/05
主分类号
C03C27/02
代理机构
代理人
主权项
地址
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