Railroad-track structure,申请号US19280285852-传众专利搜索

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发明名称	Railroad-track structure
摘要
申请公布号	US1761148(A)	申请公布日期	1930.06.03
申请号	US19280285852	申请日期	1928.06.16
申请人	MULLER RAILWAY TRACK SYSTEMS, INCORPORATED	发明人	MULLER GEORGE W.
分类号	E01B11/04;E01B11/58	主分类号	E01B11/04
代理机构		代理人
主权项
地址

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