METHODE ET APPAREILLAGE POUR L'ENSEIGNEMENT D'UNE LANGUE ETRANGERE,申请号BE19740151434-传众专利搜索

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发明名称	METHODE ET APPAREILLAGE POUR L'ENSEIGNEMENT D'UNE LANGUE ETRANGERE
摘要
申请公布号	BE823270(A1)	申请公布日期	1975.04.01
申请号	BE19740151434	申请日期	1974.12.12
申请人		发明人
分类号	G09B5/04;(IPC1-7):G09B/	主分类号	G09B5/04
代理机构		代理人
主权项
地址

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