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发明名称
TOOL FOR DIRECTIONAL DRILLING OF WELLS
摘要
申请公布号
SU972033(A1)
申请公布日期
1982.11.07
申请号
SU19802941086
申请日期
1980.06.16
申请人
AVDEEV LEONID A,SU;SULAKSHIN STEPAN S,SU
发明人
AVDEEV LEONID A,SU;SULAKSHIN STEPAN S,SU
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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