Oilfield type drill bit with rotatable gauge section,申请号GB19990002736-传众专利搜索

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发明名称	Oilfield type drill bit with rotatable gauge section
摘要
申请公布号	GB9902736(D0)	申请公布日期	1999.03.31
申请号	GB19990002736	申请日期	1999.02.09
申请人	BRIT BIT 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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