Roller cone drill bit having non-axisymmetric cutting elements oriented to optimise drilling performance,申请号GB20010020044-传众专利搜索

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发明名称	Roller cone drill bit having non-axisymmetric cutting elements oriented to optimise drilling performance
摘要
申请公布号	GB2365899(B)	申请公布日期	2003.04.23
申请号	GB20010020044	申请日期	2001.08.16
申请人		发明人
分类号	E21B10/16;(IPC1-7):E21B10/16	主分类号	E21B10/16
代理机构		代理人
主权项
地址

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