Teaching-aid device,申请号US19650449215-传众专利搜索

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发明名称	Teaching-aid device
摘要
申请公布号	US3359655(A)	申请公布日期	1967.12.26
申请号	US19650449215	申请日期	1965.04.19
申请人	LABORATORIES D'ELECTRONIQUE ET DE PHYSIQUE APPLIQUEES	发明人	AUDEBERT MICHEL
分类号	G09B7/073	主分类号	G09B7/073
代理机构		代理人
主权项
地址

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