Improvements in or relating to railway and tramway points or switches and crossings,申请号GB19300028008-传众专利搜索

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发明名称	Improvements in or relating to railway and tramway points or switches and crossings
摘要
申请公布号	GB363636(A)	申请公布日期	1931.12.21
申请号	GB19300028008	申请日期	1930.09.19
申请人	SAMUEL SUMMERSON WRIGHTSON;CHARLES RICHARD MATTHEWS	发明人
分类号	E01B5/08;E01B7/12	主分类号	E01B5/08
代理机构		代理人
主权项
地址

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