Piccardi
{{PatentInfo |Inventor=Theodor Kovacs |Assignee=Theodor Kovacs |Country=US |ApplicationNum=599259 |ApplicationDate=1932-03-16 |PatentNum=1902782 |PatentDate=1933-03-21 |PriorityDate=1931-03-18 |Titolo=Writing, drawing, or ruling pen |Marca=Pelikan |Des...