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发明名称
Procédé de fabrication d'alliages métalliques durs et des objets fabriqués avec ces alliages
摘要
申请公布号
FR837577(A)
申请公布日期
1939.02.14
申请号
FRD837577
申请日期
1938.05.05
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
C22C1/05
主分类号
C22C1/05
代理机构
代理人
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地址
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