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经营范围
发明名称
METHOD OF DRIVING MINE WORKINGS
摘要
申请公布号
SU1610026(A1)
申请公布日期
1990.11.30
申请号
SU19884464079
申请日期
1988.06.13
申请人
YAKUTSKIJ G UNIVERSITET
发明人
EGOROV ILYA K,SU
分类号
E21D9/00
主分类号
E21D9/00
代理机构
代理人
主权项
地址
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