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发明名称
METHOD FOR COMBINATION MINING OF GENTLY SLOPING SEAMS
摘要
申请公布号
SU1668667(A1)
申请公布日期
1991.08.07
申请号
SU19884395367
申请日期
1988.03.23
申请人
INST GORNOGO DELA IM.A.A.SKOCHINSKOGO
发明人
YURKEVICH GEORGIJ F,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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