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It is also believed that the company has produced parts and pen for other brands, and some believe that also the brand ''[[Scriba]]'' is attributable to [[Stilus]], but this can be excluded because that trademark was registered  ({{Marchio|42353}}) by a company from Verona. For sure it was attributable to it the [[Eridano]] trademark, registered in 1929 ({{Marchio|38320}}), which use is confirmed by [[:File:Stilus-Eridano-Invoice-1937-01.jpg|this invoice]] from 1937.

It is also believed that the company has produced parts and pen for other brands, and some believe that also the brand ''[[Scriba]]'' is attributable to [[Stilus]], but this can be excluded because that trademark was registered  ({{Marchio|42353}}) by a company from Verona. For sure it was attributable to it the [[Eridano]] trademark, registered in 1929 ({{Marchio|38320}}), which use is confirmed by [[:File:1937-01-Stilus-Eridano-Invoice.jpg|this invoice]] from [[1937]]. The same trademark is reported in [[:File:1940-Guida-Torino-Paravia-Stilografiche-B.jpg|this page]] of the Paravia guide of [[1940]] together with the mark [[Aurea]], in [[:File:1948-Guida-Torino-Paravia-Stilografiche.jpg|one page]] of the same guide of 1948 are instead mentioned the two trademarks [[Eridania]] and [[Mewflex]].