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发明名称
METHOD FOR CARRYING OUT PREPARATORY SLICE WORKINGS IN THICK SEAMS OF MINERAL DEPOSITS
摘要
申请公布号
SU1640419(A1)
申请公布日期
1991.04.07
申请号
SU19894671585
申请日期
1989.04.03
申请人
INST GORNOGO DELA IM.A.A.SKOCHINSKOGO
发明人
ALADYSHEV VLADIMIR P,SU;MALYSHEV YURIJ N,SU;ZAGORODNIJ ALEKSANDR A,SU
分类号
E21C41/18;E21D9/00
主分类号
E21C41/18
代理机构
代理人
主权项
地址
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