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The collaboration with Clerici continued until [[1924]], when Zanini founded his personal company, with the name ''Fabbrica di penne stilografiche e commercio, stampe in genere e riproduzioni opere d'arte''.<ref>meaning ''Factory for fountain pens, prints and art reprints''.</ref> In [[1925]], the activity thus far hosted in Zanini own house, was moved to Sesto Calende. The [[Ancora]] trademark ({{Marchio|40112}}) was indeed registered only in [[1929]]. In [[1938]] the production was moved to Arona, where new plants were created.<ref>both dates where reported by Letizia Jacopini in his book as result of a search in the Bologna Chamber of Commerce documents.</ref> After the death of the founder, the son Alfredo took over the management, up until [[1975]] when the company was closed.

The collaboration with Clerici continued until [[1924]], when Zanini founded his personal company, with the name ''Fabbrica di penne stilografiche e commercio, stampe in genere e riproduzioni opere d'arte''.<ref>meaning ''Factory for fountain pens, prints and art reprints''.</ref> In [[1925]], the activity thus far hosted in Zanini own house, was moved to Sesto Calende. The [[Ancora]] trademark ({{Marchio|40112}}) was indeed registered only in [[1929]]. In the mid-1930s Zanini moved to Arona and with the collaboration of his children (Alfredo, Maria, Adele, Giuseppe, Franco, Antonio) began construction of a new factory; the headquarters were moved to Arona in [[1938]]. In the early 1940s with the death of the founder, the sons continued the activities and in about 1950 Alfredo took over the management, acquiring the brand and continuing the activities until [[1975]], when the company closed.