Matériel d'enseignement du calcul,申请号FRD1355405-传众专利搜索

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发明名称	Matériel d'enseignement du calcul
摘要
申请公布号	FR1355405(A)	申请公布日期	1964.06.19
申请号	FRD1355405	申请日期
申请人		发明人	VOEGELE ROBERT LEON
分类号	G09B19/02	主分类号	G09B19/02
代理机构		代理人
主权项
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