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, 12 anni fa
In 1954, to counter the massive advent of the ballpoint pens, [[Aurora]] launched the [[Duocart]], a [[cartridge filler|cartridge]] version of the [[88]]. The cartridges were carried out in polyethylene, and designed by [http://it.wikipedia.org/wiki/Giulio_Natta Giulio Natta], nobel prize for chemistry. The distinguishing characteristic of the pen, exposed by the name, was the ability to contain within its barrel a second cartridge, to avoid to get out of ink.