Piccardi
{{PatentInfo |Inventor=Tetsuo Furuya |Assignee=Pairotto Man-Nen Hitsu Kabushiki Kaisha |Country=US |ApplicationNum=378516 |ApplicationDate=1964-06-29 |PatentNum=3292593 |PatentDate=1966-12-20 |PriorityDate=1963-11-27 |Titolo=Retractable nib fountain-pe...