Improvements in and relating to railway or tramway track, switches, crossings and the like,申请号GB19310022123-传众专利搜索

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发明名称	Improvements in and relating to railway or tramway track, switches, crossings and the like
摘要
申请公布号	GB388032(A)	申请公布日期	1933.02.06
申请号	GB19310022123	申请日期	1931.08.04
申请人	SAMUEL SUMMERSON WRIGHTSON;CHARLES RICHARD MATTHEWS	发明人
分类号	E01B7/12	主分类号	E01B7/12
代理机构		代理人
主权项
地址

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