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发明名称
DISPOSITIVO PERFECCIONADO PARA LA LECTURA EN VARIOS IDIOMAS.
摘要
申请公布号
ES251264(Y)
申请公布日期
1981.12.01
申请号
ES19640002512U
申请日期
1980.06.06
申请人
发明人
分类号
G09B19/08;(IPC1-7):09B19/08
主分类号
G09B19/08
代理机构
代理人
主权项
地址
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