Method of manufacturing railroad car axles and the like,申请号US19400319165-传众专利搜索

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发明名称	Method of manufacturing railroad car axles and the like
摘要
申请公布号	US2291408(A)	申请公布日期	1942.07.28
申请号	US19400319165	申请日期	1940.02.15
申请人	PEARSON AXEL B	发明人	PEARSON AXEL B.
分类号	B21H7/00	主分类号	B21H7/00
代理机构		代理人
主权项
地址

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