Method of forming holes in metal,申请号US19510214912-传众专利搜索

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发明名称	Method of forming holes in metal
摘要
申请公布号	US2741936(A)	申请公布日期	1956.04.17
申请号	US19510214912	申请日期	1951.03.10
申请人	FRED WOHLFAHRT	发明人	WOHLFAHRT FRED
分类号	B23B41/02;B23Q1/00;B23Q11/10	主分类号	B23B41/02
代理机构		代理人
主权项
地址

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