Apparatus for and method of producing split wire rings,申请号US19350012826-传众专利搜索

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发明名称	Apparatus for and method of producing split wire rings
摘要
申请公布号	US2128437(A)	申请公布日期	1938.08.30
申请号	US19350012826	申请日期	1935.03.25
申请人	WALWORTH PATENTS INC.	发明人	STENWALL ALFRED
分类号	B21D53/16;B21F37/00;B21F37/02	主分类号	B21D53/16
代理机构		代理人
主权项
地址

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