Improvements in or relating to road traffic control signalling apparatus,申请号GB19300018511-传众专利搜索

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发明名称	Improvements in or relating to road traffic control signalling apparatus
摘要
申请公布号	GB354475(A)	申请公布日期	1931.08.13
申请号	GB19300018511	申请日期	1930.06.17
申请人	FREDERICK VICTOR BOARDMAN	发明人
分类号	G08G1/095	主分类号	G08G1/095
代理机构		代理人
主权项
地址

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