Countersink and center reamer,申请号US19450570850-传众专利搜索

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发明名称	Countersink and center reamer
摘要
申请公布号	US2442554(A)	申请公布日期	1948.06.01
申请号	US19450570850	申请日期	1945.01.01
申请人	SWIATEK EDWARD W	发明人	SWIATEK EDWARD W.
分类号	B23B51/10	主分类号	B23B51/10
代理机构		代理人
主权项
地址

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