Piccardi
{{PatentInfo |Inventor=John A. Holland |Assignee=John A. Holland |Country=US |ApplicationNum=292313 |ApplicationDate=1882-03-18 |PatentNum=292313 |PatentDate=1884-01-22 |PriorityDate=1882-03-18 |Titolo=Lead-holder for pencils |Marca=Holland |Descrizion...