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发明名称
Loeten von Wolfram und Molybdaen
摘要
申请公布号
DE501792(C)
申请公布日期
1930.07.04
申请号
DE1927N028030D
申请日期
1927.11.08
申请人
N.V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
B23K35/30
主分类号
B23K35/30
代理机构
代理人
主权项
地址
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