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{{PatentInfo |Inventor=Yves Zuber |Assignee=Yves Zuber |Country=FR |ApplicationNum=626665 |ApplicationDate=1926-12-23 |PatentNum=626665 |PatentDate=1927-09-16 |PriorityDate=1926-12-23 |Titolo=Nouveau porte-mine |Marca=Stylomine |Descrizione=Matita mecc...