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经营范围
发明名称
Process of concentrating ores
摘要
申请公布号
US2168849(A)
申请公布日期
1939.08.08
申请号
US19380209604
申请日期
1938.05.23
申请人
ARMOUR AND COMPANY
发明人
RALSTON ANDERSON W.;POOL WILLIAM O.
分类号
B03D1/01
主分类号
B03D1/01
代理机构
代理人
主权项
地址
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