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发明名称
DEVICE FOR DETERMINING DYNAMIC DATA OF ROCK SOLID MASS
摘要
申请公布号
BG24349(A1)
申请公布日期
1978.02.10
申请号
BG19770035115
申请日期
1977.01.06
申请人
DOROSHENKO,ALEKSANDR I.
发明人
DOROSHENKO,ALEKSANDR I.
分类号
E21B49/00;G01N3/40;(IPC1-7):E21B49/00
主分类号
E21B49/00
代理机构
代理人
主权项
地址
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