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发明名称
METHOD OF PROTECTING MINE WORKINGS FROM SURFACE WATER INFLOW
摘要
申请公布号
SU1425330(A1)
申请公布日期
1988.09.23
申请号
SU19864103513
申请日期
1986.07.30
申请人
NIKIFOROV NIKOLAJ,SU
发明人
NIKIFOROV NIKOLAJ I,SU
分类号
主分类号
代理机构
代理人
主权项
地址
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