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发明名称
APPARATUS FOR MEASURING DEFORMATION AND SHIFT OF ROCK IN MINE WORKINGS
摘要
申请公布号
SU1498919(A1)
申请公布日期
1989.08.07
申请号
SU19874328495
申请日期
1987.11.17
申请人
VNII SOLYANOJ PROMYSHLENNOSTI
发明人
BEZVODNYJ GRIGORIJ N,SU;SAVCHENKO ALEKSANDR A,SU
分类号
E21C39/00;E21D15/46
主分类号
E21C39/00
代理机构
代理人
主权项
地址
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