Improvements in or relating to rotary drill bits,申请号GB19950019862-传众专利搜索

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发明名称	Improvements in or relating to rotary drill bits
摘要
申请公布号	GB2294071(B)	申请公布日期	1998.04.29
申请号	GB19950019862	申请日期	1995.09.29
申请人	* CAMCO DRILLING GROUP LIMITED	发明人	ALEX * NEWTON;JOHN * FULLER;ANDREW * MURDOCK;DANIEL J * SARIK
分类号	E21B10/60;E21B17/10;(IPC1-7):E21B10/46	主分类号	E21B10/60
代理机构		代理人
主权项
地址

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