Drill bit cutting element,申请号GB20000028957-传众专利搜索

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发明名称	Drill bit cutting element
摘要
申请公布号	GB2353550(A)	申请公布日期	2001.02.28
申请号	GB20000028957	申请日期	1997.09.23
申请人	* SMITH INTERNATIONAL, INC.	发明人	GRAHAM * MENSA-WILMOT;CARL W * KEITH;STEVEN G * SOUTHLAND
分类号	E21B10/42;E21B10/43;E21B10/56;E21B10/567;E21B10/60;(IPC1-7):E21B10/46	主分类号	E21B10/42
代理机构		代理人
主权项
地址

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