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经营范围
发明名称
METHOD OF SELECTING ACOUSTIC SIGNALS IN ROCK MASS
摘要
申请公布号
SU1492028(A1)
申请公布日期
1989.07.07
申请号
SU19874334876
申请日期
1987.11.30
申请人
MO GORNYJ INSTITUT
发明人
VOZNESENSKIJ ALEKSANDR S,SU
分类号
E21C39/00
主分类号
E21C39/00
代理机构
代理人
主权项
地址
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