Appareil destiné à faciliter l'enseignement,申请号FRD803572-传众专利搜索

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发明名称	Appareil destiné à faciliter l'enseignement
摘要
申请公布号	FR803572(A)	申请公布日期	1936.10.03
申请号	FRD803572	申请日期	1936.03.20
申请人		发明人	CLAUDEL ADOLPHE
分类号	G09B1/06	主分类号	G09B1/06
代理机构		代理人
主权项
地址

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