APPARATUS FOR DRILLING INTO THE SIDEWALL OF A DRILL HOLE.,申请号EP19800901375-传众专利搜索

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发明名称	APPARATUS FOR DRILLING INTO THE SIDEWALL OF A DRILL HOLE.
摘要
申请公布号	EP0030971(A4)	申请公布日期	1981.05.15
申请号	EP19800901375	申请日期	1981.01.12
申请人	STANDARD OIL COMPANY	发明人	MOUNT, HOUSTON B. II
分类号	E21B7/06;E21B44/00;E21B49/06;(IPC1-7):E21B4/00	主分类号	E21B7/06
代理机构		代理人
主权项
地址

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