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经营范围
发明名称
Process of reducing ores
摘要
申请公布号
US1787348(A)
申请公布日期
1930.12.30
申请号
US19260152069
申请日期
1926.12.01
申请人
HERBERT WITTEK
发明人
WITTEK HERBERT
分类号
C22B5/04;C22B5/06;C22B19/04
主分类号
C22B5/04
代理机构
代理人
主权项
地址
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