TOP DRIVE APPARATUS AND METHOD FOR GRIPPING A TUBULAR,申请号EP20070824903-传众专利搜索

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发明名称	TOP DRIVE APPARATUS AND METHOD FOR GRIPPING A TUBULAR
摘要
申请公布号	EP2100001(A1)	申请公布日期	2009.09.16
申请号	EP20070824903	申请日期	2007.11.15
申请人	NATIONAL OILWELL VARCO, L.P.	发明人	WELLS, LAWRENCE E.;WEST, NEIL EDWARD
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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