A drilling tool,申请号GB19970023290-传众专利搜索

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发明名称	A drilling tool
摘要
申请公布号	GB2319046(B)	申请公布日期	2001.07.04
申请号	GB19970023290	申请日期	1997.11.04
申请人	* BAKER HUGHES INCORPORATED	发明人	DONALD * JEWKES;VOLKER * KRUEGER
分类号	E21B10/32;E21B10/34;E21B17/10;(IPC1-7):E21B10/26;E21B7/28	主分类号	E21B10/32
代理机构		代理人
主权项
地址

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