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发明名称
METHOD FOR FORMATION OF CAVING SLOT IN LONGWALL FACE-TO-GATE JUNCTIONS
摘要
申请公布号
RU2039260(C1)
申请公布日期
1995.07.09
申请号
SU19925032364
申请日期
1992.03.16
申请人
INSTITUT GORNOGO DELA SEVERA SO RAN
发明人
BYKOV ALEKSANDR N;BYKOV NIKOLAJ A;DOVIDENKO GENNADIJ P;LOS IGOR N
分类号
E21C41/16;(IPC1-7):E21C41/16
主分类号
E21C41/16
代理机构
代理人
主权项
地址
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