CORE DRILL BIT,申请号GB19870015634-传众专利搜索

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发明名称	CORE DRILL BIT
摘要
申请公布号	GB8715634(D0)	申请公布日期	1987.08.12
申请号	GB19870015634	申请日期	1987.07.03
申请人	STRONG, W G M;RICHMAN, R A	发明人
分类号	B23B51/04;E21B10/48	主分类号	B23B51/04
代理机构		代理人
主权项
地址

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