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发明名称
Dispositivo aplicable a la enseñanza de la lectura y la escritura
摘要
申请公布号
ES87061(U)
申请公布日期
1961.06.01
申请号
ES19610000870U
申请日期
1961.05.06
申请人
DE ANDRÉS MARTÍN, ESTEBAN
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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