Piccardi
{{PatentInfo |Assignee=Gebr. Fend G.m.b.H. |Country=CH |ApplicationNum=153221 |ApplicationDate=1929-10-14 |PatentNum=153221 |PatentDate=1932-03-15 |PriorityDate=1929-10-14 |Titolo=Vierfarbstift |Marca=Fend |Descrizione=Matita meccanica multipla }} ==In...