Electronic animated advertising sign system,申请号US19470758659-传众专利搜索

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发明名称	Electronic animated advertising sign system
摘要
申请公布号	US2568767(A)	申请公布日期	1951.09.25
申请号	US19470758659	申请日期	1947.07.02
申请人	MEGA CORPORATION	发明人	SEAMAN RICHARD H.
分类号	G09F13/26;H05B41/44	主分类号	G09F13/26
代理机构		代理人
主权项
地址

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