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发明名称
METHOD FOR WORKING OF FLAT-SEAM USEFUL MINERAL DEPOSITS
摘要
申请公布号
SU1719638(A1)
申请公布日期
1992.03.15
申请号
SU19904789494
申请日期
1990.02.07
申请人
NI GORNORUDNYJ INSTITUT
发明人
PYATNITSA MIKHAIL A,SU;KISTANOV STANISLAV A,SU;KIRPIKIN ANATOLIJ V,SU
分类号
E21C41/18
主分类号
E21C41/18
代理机构
代理人
主权项
地址
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