A method and a device for directional drilling,申请号GB19970020666-传众专利搜索

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发明名称	A method and a device for directional drilling
摘要
申请公布号	GB2315791(A)	申请公布日期	1998.02.11
申请号	GB19970020666	申请日期	1996.03.28
申请人	* ROGALANDSFORSKNING	发明人	OLA MICHAEL * VESTAVIK
分类号	E21B7/06;(IPC1-7):E21B7/06;E21B7/18	主分类号	E21B7/06
代理机构		代理人
主权项
地址

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