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发明名称
Steerable drill string
摘要
申请公布号
AU7745500(A)
申请公布日期
2001.05.10
申请号
AU20000077455
申请日期
2000.10.02
申请人
APS TECHNOLOGY, INC.
发明人
MARK ELLSWORTH WASSELL
分类号
E21B7/06;E21B7/08
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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