Directional drilling tool,申请号GB19910006813-传众专利搜索

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发明名称	Directional drilling tool
摘要
申请公布号	GB2245623(A)	申请公布日期	1992.01.08
申请号	GB19910006813	申请日期	1991.04.02
申请人	* FONTAN LIMITED	发明人	JAMES D * BASE;DAVID * HARVEY
分类号	E21B7/06;E21B7/08	主分类号	E21B7/06
代理机构		代理人
主权项
地址

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