Railway-track construction,申请号US19290351639-传众专利搜索

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发明名称	Railway-track construction
摘要
申请公布号	US1743662(A)	申请公布日期	1930.01.14
申请号	US19290351639	申请日期	1929.04.01
申请人	PETTIBONE MULLIKEN COMPANY	发明人	ENSTROM AUGUST
分类号	E01B5/18	主分类号	E01B5/18
代理机构		代理人
主权项
地址

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