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发明名称
APPARATUS FOR ACOUSTIC MONITORING OF ICE-ROCK BARRIER
摘要
申请公布号
SU444145(A1)
申请公布日期
1977.12.05
申请号
SU19701476715
申请日期
1970.09.07
申请人
VNII ORGANIZATSII MEKH SHAKHTNOGO STROITELSTVA
发明人
MINCHUK V.P.,SU;GUR B.N.,SU;FAJNBERG G.S.,SU
分类号
E21B47/14;E21B47/00;G01V1/00;G01V1/40;(IPC1-7):G01V1/40
主分类号
E21B47/14
代理机构
代理人
主权项
地址
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