Piccardi
{{PatentInfo |Inventor=William I. Ferris |Assignee=L. E. Waterman Company |Country=US |ApplicationNum=254321 |ApplicationDate=1905-03-24 |PatentNum=800141 |PatentDate=1905-09-26 |PriorityDate=1905-05-07 |Titolo=Safety-clip for holding pens and pencils ...