Method of reforming bars for rail joints,申请号US19290350733-传众专利搜索

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发明名称	Method of reforming bars for rail joints
摘要
申请公布号	US1833026(A)	申请公布日期	1931.11.24
申请号	US19290350733	申请日期	1929.03.28
申请人	MCKENNA PROCESS COMPANY	发明人	LANGFORD GEORGE
分类号	B21K9/00	主分类号	B21K9/00
代理机构		代理人
主权项
地址

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