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发明名称
DEVICE FOR ROTARY DRILLING
摘要
申请公布号
RU2100562(C1)
申请公布日期
1997.12.27
申请号
RU19950119902
申请日期
1995.11.27
申请人
INSTITUT GORNOGO DELA IM.A.A.SKOCHINSKOGO;TOVARISHCHESTVO S OGRANICHENNOJ OTVETSTVENNOSTYU "PIGMA"
发明人
RODIONOV NIKOLAJ S;MULTANOV SERGEJ I;MEDOVYJ YURIJ A
分类号
E21B10/60;(IPC1-7):E21B10/60
主分类号
E21B10/60
代理机构
代理人
主权项
地址
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