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发明名称
STAND FOR INVESTIGATING PROCESS OF ENLARGING BOREHOLE BOTTOM
摘要
申请公布号
SU659688(A1)
申请公布日期
1979.04.30
申请号
SU19762361835
申请日期
1976.05.07
申请人
DN INZH-STR I;MO AVTOMOBILNO-DOROZHNYJ INSTITUT
发明人
BALOVNEV VLADILEN ,SU;SERKO AFANASIJ P,SU;KHMARA LEONID A,SU;ERMILOV ALEKSANDR B,SU
分类号
(IPC1-7):E02D17/14
主分类号
(IPC1-7):E02D17/14
代理机构
代理人
主权项
地址
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