Apparatus for making metal rings,申请号US19350054058-传众专利搜索

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发明名称	Apparatus for making metal rings
摘要
申请公布号	US2143707(A)	申请公布日期	1939.01.10
申请号	US19350054058	申请日期	1935.12.12
申请人	THE FIRESTONE STEEL PRODUCTS COMPANY	发明人	MONAHAN THOMAS G.
分类号	B21D53/16	主分类号	B21D53/16
代理机构		代理人
主权项
地址

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