IMPROVEMENTS IN DRILLING EQUIPMENT,申请号EP19840304634-传众专利搜索

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发明名称	IMPROVEMENTS IN DRILLING EQUIPMENT
摘要
申请公布号	EP0131451(A3)	申请公布日期	1986.02.05
申请号	EP19840304634	申请日期	1984.07.06
申请人	INTECH OIL TOOLS LTD.	发明人	WALTER, BRUNO H.
分类号	E21B10/60;E21B7/18;E21B7/24;E21B21/00;(IPC1-7):E21B21/00	主分类号	E21B10/60
代理机构		代理人
主权项
地址

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