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Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments
(AREA)
Abstract
Dispositivo aplicable a útiles escritores tipo retrovisores caracterizado esencialmente por un elemento tubular en la zona interior del cuerpo del útil escritor para que ejerza presión sobre la varilla constitutiva del depósito de tinta portadora de la punta escritora.
ES105819U1964-08-201964-08-20Un dispositivo aplicable a utiles escritores tipo retractil.
ExpiredES105819Y
(es)