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经营范围
发明名称
LEACHING MINERALS
摘要
申请公布号
AU2097976(A)
申请公布日期
1977.04.07
申请号
AU19760020979
申请日期
1976.12.30
申请人
DU PONT DE NEMOURS AND CO., E.I.
发明人
DAVID LINN COURSEN
分类号
E21B43/17;E21B43/263;E21B43/28
主分类号
E21B43/17
代理机构
代理人
主权项
地址
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