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发明名称
INDIVIDUAL HYDRAULIC ROOF SUPPORT FOR STOPES
摘要
申请公布号
SU800379(A1)
申请公布日期
1981.01.30
申请号
SU19792748514
申请日期
1979.04.06
申请人
VNI PK UGOLNYJ INSTITUT
发明人
NOVIKOV VLADIMIR YA,SU;PISAREV VYACHESLAV F,SU;POTOTSKIJ ALEKSEJ A,SU
分类号
E21D15/44;(IPC1-7):E21D15/44
主分类号
E21D15/44
代理机构
代理人
主权项
地址
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