Translations:Colorado/2/en

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The Colorado brand distinguishes, rather than a company, a single pen. For long time these pens, because of the filling system (a so called "stantuffo tuffante"), were attributed to Omas but they are from a completely independent brand, linked to the activities of Orlando Quadretti who also holds the trademark registration (Reg. Gen. N. 75447). [1]
  1. as described in the Letizia Jacopini book, this attribution is due to the Gian Stefano Germano work, who attribute it to him in the book "Storia Universale della Stilografica", and is confirmed by the direct testimony of the son of Orlando Quadretti and by the documents on the registration of Trademarks of the Archivio Centrale dello Stato.