A wellhead assembly for communicating with the casing hanger annulus,申请号GB20040013198-传众专利搜索

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发明名称	A wellhead assembly for communicating with the casing hanger annulus
摘要
申请公布号	GB2400623(B)	申请公布日期	2005.08.24
申请号	GB20040013198	申请日期	2002.11.26
申请人	* ABB VETCO GRAY, INC.;* VETCO GRAY INC	发明人	ALAN MURRAY * CLARK
分类号	E21B;E21B7/12;E21B29/12;E21B33/035;E21B33/037;E21B33/076;E21B41/00;(IPC1-7):E21B7/12	主分类号	E21B
代理机构		代理人
主权项
地址

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