Method and means of instruction in the graphic arts,申请号GB19610024384-传众专利搜索

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发明名称	Method and means of instruction in the graphic arts
摘要
申请公布号	GB954685(A)	申请公布日期	1964.04.08
申请号	GB19610024384	申请日期	1961.07.05
申请人	JOHN WYNNE-MORGAN	发明人
分类号	G09B11/10	主分类号	G09B11/10
代理机构		代理人
主权项
地址

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