Improvements in advertising and signalling devices,申请号GB19310014294-传众专利搜索

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发明名称	Improvements in advertising and signalling devices
摘要
申请公布号	GB350460(A)	申请公布日期	1931.06.08
申请号	GB19310014294	申请日期	1929.12.07
申请人	HENRY KINGSFORD HARRIS	发明人
分类号	G09G3/00	主分类号	G09G3/00
代理机构		代理人
主权项
地址

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