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Patent:CH239780


Patent:CH 239780
Title:Dispositivo di impostazione per macchine addizionatrici del tipo a tastiera ridotta.
Date:15.11.1945
Place:Milano (Italy)
Country:Switzerland
Person:Bona, Aldo
Company:Aldo Bona (P)
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 CH239780


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Aus der Patentschrift CH239780