Piccardi
{{PatentInfo |Inventor=Felix Riesenberg |Assignee=Felix Riesenberg |Country=GB |ApplicationNum=18716 |ApplicationDate=1912-08-15 |PatentNum=191218716 |PatentDate=1912-09-03 |PriorityDate=1912-09-12 |Titolo=Improvements in and relating to Fountain Pens ...