A rotary drag-type drill bit and a cutter therefor,申请号GB19980000404-传众专利搜索

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发明名称	A rotary drag-type drill bit and a cutter therefor
摘要
申请公布号	GB9800404(D0)	申请公布日期	1998.03.04
申请号	GB19980000404	申请日期	1998.01.10
申请人	CAMCO INTERNATIONAL (UK) LIMITED	发明人
分类号		主分类号
代理机构		代理人
主权项
地址

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