DOWNHOLE CLUTCH WITH FLOW PORTS,申请号EP19980916878-传众专利搜索

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发明名称	DOWNHOLE CLUTCH WITH FLOW PORTS
摘要
申请公布号	EP0963502(B1)	申请公布日期	2003.05.02
申请号	EP19980916878	申请日期	1998.02.24
申请人	SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.	发明人	BEST, BRUNO;VAN BUREN, MARKUS, ANTONIUS
分类号	E21B17/05;E21B17/06;E21B21/10;(IPC1-7):E21B17/06	主分类号	E21B17/05
代理机构		代理人
主权项
地址

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