Improvements relating to indicating devices for displaying variable information,申请号GB19490006828-传众专利搜索

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发明名称	Improvements relating to indicating devices for displaying variable information
摘要
申请公布号	GB668851(A)	申请公布日期	1952.03.26
申请号	GB19490006828	申请日期	1949.03.12
申请人	WILLIAM JOSEPH NASH	发明人
分类号	G09F11/30	主分类号	G09F11/30
代理机构		代理人
主权项
地址

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