IMPREGNATED BIT WITH CHANGEABLE HYDRAULIC NOZZLES,申请号EP20070862646-传众专利搜索

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发明名称	IMPREGNATED BIT WITH CHANGEABLE HYDRAULIC NOZZLES
摘要
申请公布号	EP2102444(B1)	申请公布日期	2010.08.25
申请号	EP20070862646	申请日期	2007.12.07
申请人	BAKER HUGHES INCORPORATED	发明人	RICHERT, VOLKER
分类号	E21B10/42;E21B10/60;E21B10/61	主分类号	E21B10/42
代理机构		代理人
主权项
地址

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