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发明名称
Dispositivo que evita el desgarro de documentos y facilita, la apertura de los sobres o rollos de los especialmente destinados a circular por los servicios de Correos.
摘要
申请公布号
ES14448(U)
申请公布日期
1947.06.16
申请号
ES19480000144U
申请日期
1947.01.31
申请人
SEPÚLVEDA VILLAFRANCA, MAXIMILIANO
发明人
分类号
主分类号
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