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经营范围
发明名称
Method and apparatus for controlling precession in a drilling assembly
摘要
申请公布号
AU2008270861(A1)
申请公布日期
2009.01.08
申请号
AU20080270861
申请日期
2008.06.11
申请人
VALIDUS INTERNATIONAL, LLC
发明人
FRANK J. SCHUH
分类号
E21B49/02
主分类号
E21B49/02
代理机构
代理人
主权项
地址
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