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{{PatentInfo |Inventor=Hajime Ishida |Assignee=Pairotto Man-Nen Hitsu Kabushiki Kaisha |Country=US |ApplicationNum=359087 |ApplicationDate=1964-04-13 |PatentNum=3292596 |PatentDate=1966-12-20 |PriorityDate=1963-04-19 |Titolo=Nib unit fixing device for ...