TWO-PART CONSTITUTION DRILL BIT,申请号JP19830157257-传众专利搜索

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发明名称	TWO-PART CONSTITUTION DRILL BIT
摘要
申请公布号	JPS5976394(A)	申请公布日期	1984.05.01
申请号	JP19830157257	申请日期	1983.08.30
申请人	INGERSOLL RAND CO	发明人	ROBAATO UESURII HAGESU
分类号	E21B10/46;E21B17/04;E21B17/042	主分类号	E21B10/46
代理机构		代理人
主权项
地址

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