Improvements in and relating to apparatus for the visual and aural presentation of information,申请号GB19560038297-传众专利搜索

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发明名称	Improvements in and relating to apparatus for the visual and aural presentation of information
摘要
申请公布号	GB839576(A)	申请公布日期	1960.06.29
申请号	GB19560038297	申请日期	1956.12.14
申请人	EDUARD RITTER	发明人
分类号	G11B3/095;G11B17/028	主分类号	G11B3/095
代理机构		代理人
主权项
地址

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