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发明名称
Instrumento auxiliar de dibujo, que permite trazar líneas paralelas equidistantes o no, a voluntad.
摘要
申请公布号
ES25029(U)
申请公布日期
1950.12.16
申请号
ES19290000250U
申请日期
1950.11.15
申请人
GUAL BIOSCA, JOSÉ;ROCA SUGRAÑÉS, PEDRO
发明人
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主分类号
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