Improved downhole tool,申请号GB20030016609-传众专利搜索

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发明名称	Improved downhole tool
摘要
申请公布号	GB0316609(D0)	申请公布日期	2003.08.20
申请号	GB20030016609	申请日期	2002.01.15
申请人	NEYRFOR-WEIR LIMITED	发明人
分类号	E21B4/02;E21B17/06	主分类号	E21B4/02
代理机构		代理人
主权项
地址

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