Down-hole tool with centralising component,申请号GB19980018181-传众专利搜索

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发明名称	Down-hole tool with centralising component
摘要
申请公布号	GB9818181(D0)	申请公布日期	1998.10.14
申请号	GB19980018181	申请日期	1998.08.21
申请人	SPECIALISED PETROLEUM SERVICES LIMITED	发明人
分类号	E21B17/10;E21B37/02	主分类号	E21B17/10
代理机构		代理人
主权项
地址

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