This changed only after the mid '30s, when the role of [[Aurora]] sub-brand became officially recognized by the appearance of ''Olo'' pens in the parent company catalogs, as proposed as lower end pens, but with the usual characteristics of reliability and robustness. | This changed only after the mid '30s, when the role of [[Aurora]] sub-brand became officially recognized by the appearance of ''Olo'' pens in the parent company catalogs, as proposed as lower end pens, but with the usual characteristics of reliability and robustness. |