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发明名称
Hoja especial para libros didácticos
摘要
申请公布号
ES33849(Y)
申请公布日期
1956.01.01
申请号
ES19490000338U
申请日期
1952.12.12
申请人
MONTSERRAT, CONCEPCIÓN, JOSÉ;COTS PORTA, MANUEL
发明人
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主分类号
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