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发明名称
Connecting tubulars and measuring torque
摘要
申请公布号
GB2474375(A)
申请公布日期
2011.04.13
申请号
GB20100020825
申请日期
2007.04.26
申请人
WEATHERFORD/LAMB INC.
发明人
MICHAEL JAHN;BERND-GEORG PIETRAS;KARSTEN HEIDECKE
分类号
E21B19/16
主分类号
E21B19/16
代理机构
代理人
主权项
地址
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