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发明名称
METHOD OF MINING THICK MINERAL DEPOSITS
摘要
申请公布号
SU1631174(A1)
申请公布日期
1991.02.28
申请号
SU19894657048
申请日期
1989.03.01
申请人
NI GORNORUDNYJ INSTITUT
发明人
NIGMATULLIN VLADIMIR S,SU
分类号
E21C41/16
主分类号
E21C41/16
代理机构
代理人
主权项
地址
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