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发明名称
DRIFTING TUBING
摘要
申请公布号
EP1611312(B1)
申请公布日期
2010.11.24
申请号
EP20040725420
申请日期
2004.04.02
申请人
CHURCHILL DRILLING TOOLS LIMITED
发明人
CHURCHILL, ANDREW, PHILIP
分类号
E21B47/09;E21B23/08;E21B23/02;E21B41/00
主分类号
E21B47/09
代理机构
代理人
主权项
地址
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