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发明名称
MINE WORKING SUPPORT
摘要
申请公布号
SU1488504(A1)
申请公布日期
1989.06.23
申请号
SU19874318022
申请日期
1987.09.14
申请人
VNII BEZOPASNOSTI TRUDA V GOR
发明人
SHCHERBATYUK GEORGIJ YA,SU;KAMBAROV VLADIMIR A,SU
分类号
E21D11/14
主分类号
E21D11/14
代理机构
代理人
主权项
地址
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