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发明名称
Dispositivo para libros de hojas cambiables y clasificadores.
摘要
申请公布号
ES31106(U)
申请公布日期
1952.06.01
申请号
ES19060000311U
申请日期
1952.05.10
申请人
ALBADALEJO ROMERO, JULIÁN
发明人
分类号
主分类号
代理机构
代理人
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