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发明名称
Atril auxilar para máquinas de escribir
摘要
申请公布号
ES52840(U)
申请公布日期
1956.09.01
申请号
ES19400000528U
申请日期
1955.09.02
申请人
ALCOVER REAL, FRANCISCO
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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