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发明名称
BOTTOM-HOLE DEFLECTING DEVICE
摘要
申请公布号
RU2085694(C1)
申请公布日期
1997.07.27
申请号
RU19950108126
申请日期
1995.05.18
申请人
PERMSKIJ FILIAL VSEROSSIJSKOGO NAUCHNO-ISSLEDOVATELSKOGO INSTITUTA BUROVOJ TEKHNIKI
发明人
MAZEIN VYACHESLAV E;AZANOV EVGENIJ A;GURYANOV EVGENIJ V
分类号
E21B7/08;(IPC1-7):E21B7/08
主分类号
E21B7/08
代理机构
代理人
主权项
地址
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