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发明名称
Pizarra escolar perfeccionada
摘要
申请公布号
ES60149(Y)
申请公布日期
1957.11.01
申请号
ES19490000601U
申请日期
1957.05.14
申请人
JUAN LLORÉNS HIJO, S. A.
发明人
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主分类号
代理机构
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