A drill bit and a method for making a drill bit,申请号GB20050001500-传众专利搜索

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发明名称	A drill bit and a method for making a drill bit
摘要
申请公布号	GB2410266(B)	申请公布日期	2007.01.03
申请号	GB20050001500	申请日期	2005.01.24
申请人	SMITH INTERNATIONAL, INC.	发明人	GEORGE B WITMAN;ZHOU YONG
分类号	E21B10/16;E21B10/08	主分类号	E21B10/16
代理机构		代理人
主权项
地址

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