Method for controlling the direction of an earth drilling apparatus and device for making bore holes,申请号EP19920111212-传众专利搜索

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发明名称	Method for controlling the direction of an earth drilling apparatus and device for making bore holes
摘要
申请公布号	EP0522446(B1)	申请公布日期	1996.10.02
申请号	EP19920111212	申请日期	1992.07.02
申请人	TERRA AG FUER TIEFBAUTECHNIK	发明人	JENNE, GUSTAV, DR.;JENNE, DIETMAR
分类号	E21B4/14;E21B7/06;E21B7/18;E21B7/26;E21B10/38;E21B17/07;(IPC1-7):E21B7/06	主分类号	E21B4/14
代理机构		代理人
主权项
地址

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