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发明名称
BOREHOLE DEVICE FOR MONITORING CHANGE OF ROCK STATE OF STRESS
摘要
申请公布号
SU623968(A1)
申请公布日期
1978.09.15
申请号
SU19762419424
申请日期
1976.11.09
申请人
VNII GORNOJ GEOMEKHANIKI MARKSHEJDERSKOGO DELA
发明人
PETUKHOV IGNATIJ M,SU;GENKIN VLADISLAV A,SU;KUZNETSOV VLADISLAV P,SU
分类号
E21C39/00;(IPC1-7):E21C39/00
主分类号
E21C39/00
代理机构
代理人
主权项
地址
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