Combination center and center drill,申请号US19450604800-传众专利搜索

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发明名称	Combination center and center drill
摘要
申请公布号	US2481939(A)	申请公布日期	1949.09.13
申请号	US19450604800	申请日期	1945.07.13
申请人	MILLER RAPHAEL W	发明人	MILLER RAPHAEL W.
分类号	B23B23/02;B23B49/04	主分类号	B23B23/02
代理机构		代理人
主权项
地址

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