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经营范围
发明名称
Improvements in or relating to electrically insulating materials
摘要
申请公布号
GB665601(A)
申请公布日期
1952.01.30
申请号
GB19460014980
申请日期
1946.05.17
申请人
N.V. PHILIPS GLOEILAMPENFABRIEKEN
发明人
分类号
H01B3/48
主分类号
H01B3/48
代理机构
代理人
主权项
地址
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