Piccardi
{{PatentInfo |Inventor=Theodor Kovacs |Assignee=Theodor Kovacs |Country=US |ApplicationNum=465764 |ApplicationDate=1921-04-30 |PatentNum=1447790 |PatentDate=1923-03-06 |PriorityDate=1921-04-30 |Titolo=Filling device with rubber cap for fountain pens |M...