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发明名称
Ore dressing
摘要
申请公布号
US2194522(A)
申请公布日期
1940.03.26
申请号
US19390269813
申请日期
1939.04.24
申请人
HARRIS BENJAMIN R
发明人
HARRIS BENJAMIN R.
分类号
B03D1/02
主分类号
B03D1/02
代理机构
代理人
主权项
地址
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