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发明名称
TABLERO PARA EL DESARROLLO EDUCATIVO DEL DIBUJO.
摘要
申请公布号
ES226145(Y)
申请公布日期
1977.08.01
申请号
ES19450002261U
申请日期
1977.02.03
申请人
发明人
分类号
A47B;(IPC1-7):47B/
主分类号
A47B
代理机构
代理人
主权项
地址
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