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发明名称
Regla geométrica auxiliar de dibujo.
摘要
申请公布号
ES26457(U)
申请公布日期
1951.05.16
申请号
ES19570000264U
申请日期
1951.04.12
申请人
FERNÁNDEZ ROCES, ANTONIO
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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