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发明名称
ROOF SUPPORT FOR DRIFTS IN PILLAR MINING
摘要
申请公布号
SU1155765(A1)
申请公布日期
1985.05.15
申请号
SU19833583041
申请日期
1983.04.18
申请人
VNI PK UGOLNYJ INSTITUT
发明人
PISHCHULIN VALENTIN V,SU;NAM LEV S,SU;RAZUVAEV VYACHESLAV I,SU;LATYPOV AJRAT S,SU
分类号
E21D11/14;(IPC1-7):E21D11/14
主分类号
E21D11/14
代理机构
代理人
主权项
地址
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