Improvements in means for the visual indication of numbers and other information,申请号GB19540037205-传众专利搜索

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发明名称	Improvements in means for the visual indication of numbers and other information
摘要
申请公布号	GB786026(A)	申请公布日期	1957.11.13
申请号	GB19540037205	申请日期	1950.06.23
申请人	GERHARD DIRKS	发明人
分类号	G09G3/04	主分类号	G09G3/04
代理机构		代理人
主权项
地址

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