Improvements in or relating to rotary drill bits,申请号GB19960008732-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	GB9608732(D0)	申请公布日期	1996.07.03
申请号	GB19960008732	申请日期	1996.04.26
申请人	CAMCO DRILLING GROUP LIMITED	发明人
分类号	E21B10/54;E21B10/55;E21B10/60	主分类号	E21B10/54
代理机构		代理人
主权项
地址

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