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发明名称
Hydraulic mining process
摘要
申请公布号
US3041053(A)
申请公布日期
1962.06.26
申请号
US19590808040
申请日期
1959.04.22
申请人
JOHNSON ARTHUR F
发明人
JOHNSON ARTHUR F.
分类号
E21C47/10
主分类号
E21C47/10
代理机构
代理人
主权项
地址
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