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发明名称
Juego de gráficos para enseñar a dibujar correctamente
摘要
申请公布号
ES58478(U)
申请公布日期
1957.03.16
申请号
ES19780000584U
申请日期
1957.01.31
申请人
BÉJAR CALBÉ, ANTONIO DE
发明人
分类号
主分类号
代理机构
代理人
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