Perfectionnements à des appareils pour changer automatiquement des enseignes ou des annonces,申请号FRD697850-传众专利搜索

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发明名称	Perfectionnements à des appareils pour changer automatiquement des enseignes ou des annonces
摘要
申请公布号	FR697850(A)	申请公布日期	1931.01.22
申请号	FRD697850	申请日期	1930.06.24
申请人		发明人	BEDDISON FRANCIS LOVELL
分类号	G09F11/02	主分类号	G09F11/02
代理机构		代理人
主权项
地址

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