Piccardi
{{PatentInfo |Inventor=John James |Assignee=John James |Country=GB |ApplicationNum=180/18 |ApplicationDate=1918-01-02 |PatentNum=114801 |PatentDate=1918-04-18 |PriorityDate=1918-01-02 |Titolo=A New or Improved Means of Increasing the Life of Pen Nibs |...