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发明名称
Dispositivo aplicable a lápices ylapiceros mecánicos para que avance la mna con o sin retroceso
摘要
申请公布号
ES29144(Y)
申请公布日期
1952.04.16
申请号
ES19440000291U
申请日期
1951.09.22
申请人
MISERACHS COCA, ANTONIO
发明人
分类号
主分类号
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