WELL TUBING COUPLING SYSTEM,申请号GB19790025249-传众专利搜索

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发明名称	WELL TUBING COUPLING SYSTEM
摘要
申请公布号	GB2026061(B)	申请公布日期	1982.07.07
申请号	GB19790025249	申请日期	1979.07.19
申请人	OTIS ENG CORP	发明人
分类号	E21B17/06;E21B33/122;E21B43/14;(IPC1-7):E21B33/12	主分类号	E21B17/06
代理机构		代理人
主权项
地址

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