Machine à enseigner,申请号FR19670103359-传众专利搜索

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发明名称	Machine à enseigner
摘要
申请公布号	FR1519447(A)	申请公布日期	1968.03.29
申请号	FR19670103359	申请日期	1967.04.19
申请人	ENCYCLOPAEDIA BRITTANICA, INC.	发明人
分类号	G09B5/04	主分类号	G09B5/04
代理机构		代理人
主权项
地址

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