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But it was only in 1925, after having completed the construction of its own factory in Via degli Orbi, that ''Officine Meccaniche Armando Simoni'' were create, whose acronym, [[OMAS]], will become the brand used for the marketed fountain pens. The first relevant model produced by [[OMAS]] was the "[[penna del dottore]]", patented in 1927, was an hard rubber [[lever filler]] model with a compartment located inside the barrel of the pen that contained in addition to the sac and the lever mechanism, a thermometer for measuring the fever, kept separate from the rest by a metal partition. The same year Simoni patented the metal joint used for the construction of the [[OMAS]] desk pens, for which the company becomes one of the leading Italian manufacturers.

But it was only in [[1925]], after having completed the construction of its own factory in Via degli Orbi, that ''Officine Meccaniche Armando Simoni'' were create, whose acronym, [[OMAS]], will become the brand used for the marketed fountain pens. The first relevant model produced by [[OMAS]] was the "[[penna del dottore]]", patented in [[1927]], was an hard rubber [[lever filler]] model with a compartment located inside the barrel of the pen that contained in addition to the sac and the lever mechanism, a thermometer for measuring the fever, kept separate from the rest by a metal partition. The same year Simoni patented the metal joint used for the construction of the [[OMAS]] desk pens, for which the company becomes one of the leading Italian manufacturers.