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发明名称
VERFAHREN UND VORRICHTUNG ZUM BOHREN EINES BOHRLOCHS MIT EINEM BOHRLOCH-LINER
摘要
申请公布号
AT442510(T)
申请公布日期
2009.09.15
申请号
AT20040720343T
申请日期
2004.03.12
申请人
TESCO CORPORATION;TESSARI, ROBERT;HOUTCHENS, BRUCE D.
发明人
TESSARI, ROBERT;HOUTCHENS, BRUCE
分类号
E21B7/20;E21B21/10;E21B33/14;E21B43/10
主分类号
E21B7/20
代理机构
代理人
主权项
地址
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