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发明名称
Refining copper
摘要
申请公布号
US2172009(A)
申请公布日期
1939.09.05
申请号
US19380235106
申请日期
1938.10.14
申请人
CALUMET & HECLA CONSOLIDATED COPPER COMPANY OF MICHIGAN
发明人
KENNY HERMAN C.
分类号
C22B15/00;C22B15/14
主分类号
C22B15/00
代理机构
代理人
主权项
地址
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