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Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments
(AREA)
Abstract
Dispositivo portador de elementos escritores múltiples, que consiste esencialmente en un cuerpo de perfil general cilíndrico o prismático formado por dos capuchones roscados o ajustables a una pieza central tubular abierta por ambas bases para la introducción en cada uno de sus orificios o bocas extremas del casquillo portador de dos elementos escritores, uno de los cuales queda en posición de uso mientras su opuesto se halla colocado en el interior de aquella pieza tubular.
ES0016884U1948-02-281948-02-28Dispositivo portador de elementos escritores múltiples.
ExpiredES16884Y
(es)