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发明名称
DEVICE FOR CONTROLLING HARD-TO-CAVE ROOF
摘要
申请公布号
SU1698438(A1)
申请公布日期
1991.12.15
申请号
SU19884622142
申请日期
1988.12.20
申请人
INST GORNOGO DELA AN KAZAKHSK
发明人
ROGOV EVGENIJ I,SU;POTOTSKIJ VASILIJ B,SU;BAJMUKHAMETOV SERGAZY K,SU;ERSHOV YURIJ I,SU;LOBIKOV IVAN I,SU;MAKISHEV AKHAT SH,SU;BEKBULATOV ABUSAGIT K,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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