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经营范围
发明名称
Termionisk Generator.
摘要
申请公布号
DK42374(C)
申请公布日期
1930.06.10
申请号
DKD42374
申请日期
1928.12.13
申请人
GLOEDELAMPEFABRIKANTER N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
主分类号
代理机构
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