Improvements in and relating to spring operated crossings, trap points, switches andthe like for railways, tramways and the like,申请号GB19340004182-传众专利搜索

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发明名称	Improvements in and relating to spring operated crossings, trap points, switches andthe like for railways, tramways and the like
摘要
申请公布号	GB431361(A)	申请公布日期	1935.07.05
申请号	GB19340004182	申请日期	1934.02.08
申请人	HENRY WILLIAMS LIMITED;DAVID DENIS WILLIAMS	发明人
分类号	E01B7/14	主分类号	E01B7/14
代理机构		代理人
主权项
地址

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