Improvements in or relating to railway track,申请号GB19570014860-传众专利搜索

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发明名称	Improvements in or relating to railway track
摘要
申请公布号	GB854755(A)	申请公布日期	1960.11.23
申请号	GB19570014860	申请日期	1957.05.10
申请人	HENRY DONALD NELSON	发明人
分类号	E01B9/34	主分类号	E01B9/34
代理机构		代理人
主权项
地址

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