Dual-type plug for wellhead,申请号GB20050026178-传众专利搜索

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发明名称	Dual-type plug for wellhead
摘要
申请公布号	GB0526178(D0)	申请公布日期	2006.02.01
申请号	GB20050026178	申请日期	2004.05.19
申请人	FMC KONGSBERG SUBSEA AS	发明人
分类号	E21B33/035;E21B33/068	主分类号	E21B33/035
代理机构		代理人
主权项
地址

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