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经营范围
发明名称
Refining of copper
摘要
申请公布号
US1863419(A)
申请公布日期
1932.06.14
申请号
US19300505587
申请日期
1930.12.30
申请人
SNELLING WALTER O
发明人
SNELLING WALTER O.
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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