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发明名称
Libro propio para la enseñanza escolar colectiva
摘要
申请公布号
ES1346(Y)
申请公布日期
1933.06.01
申请号
ES19460000013U
申请日期
1932.12.22
申请人
BARRAL NAULART, CARLOS
发明人
分类号
主分类号
代理机构
代理人
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