Piccardi
{{PatentInfo |Assignee=Joseph Wallace |Country=US |ApplicationNum=327761 |ApplicationDate=1940-04-04 |PatentNum=2217502 |PatentDate=1940-10-08 |PriorityDate=1940-04-04 |Titolo=Stylographic pen |Marca=Inkograph |Descrizione=Penna a stilo }} ==Informazio...