Nonconductive centralizer,申请号GB20020030128-传众专利搜索

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发明名称	Nonconductive centralizer
摘要
申请公布号	GB0230128(D0)	申请公布日期	2003.01.29
申请号	GB20020030128	申请日期	2001.06.29
申请人	BRUNEL OILFIELD SERVICES (UK) LIMITED	发明人
分类号	E21B17/00;E21B17/10	主分类号	E21B17/00
代理机构		代理人
主权项
地址

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