Perfectionnements aux appareils didactiques,申请号FR19640993127-传众专利搜索

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发明名称	Perfectionnements aux appareils didactiques
摘要
申请公布号	FR1412852(A)	申请公布日期	1965.10.01
申请号	FR19640993127	申请日期	1964.10.29
申请人		发明人	BAERLE FREDERIC CHARLES GERARD VAN
分类号	G09B3/04	主分类号	G09B3/04
代理机构		代理人
主权项
地址

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