Cutter for forming twist drills,申请号US19320597397-传众专利搜索

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法人/股东/高管

发明名称	Cutter for forming twist drills
摘要
申请公布号	US1989667(A)	申请公布日期	1935.02.05
申请号	US19320597397	申请日期	1932.03.07
申请人	NATIONAL TWIST DRILL AND TOOL COMPANY	发明人	COVILL HARRY A.
分类号	B23C5/14	主分类号	B23C5/14
代理机构		代理人
主权项
地址

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