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发明名称
METHOD FOR PROTECTING VERTICAL MINE SHAFTS AGAINST INFLUENCE OF UNDERGROUND WORKING
摘要
申请公布号
SU1643721(A1)
申请公布日期
1991.04.23
申请号
SU19884354458
申请日期
1988.11.17
申请人
UK VNII GORNOJ GEOMEKHANIKI MARKSHEJDERSKOGO DELA
发明人
DRIBAN VIKTOR A,SU;YUZHANIN ILYA A,SU
分类号
E21D1/00
主分类号
E21D1/00
代理机构
代理人
主权项
地址
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