An improved revolving sign,申请号GB19300004024-传众专利搜索

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发明名称	An improved revolving sign
摘要
申请公布号	GB342532(A)	申请公布日期	1931.02.05
申请号	GB19300004024	申请日期	1930.02.06
申请人	ERNEST HENRY ARMITAGE	发明人
分类号	G09F13/00;G09F13/04	主分类号	G09F13/00
代理机构		代理人
主权项
地址

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