Piccardi
{{PatentInfo |Inventor=Horace L. Blackman |Assignee=The Parker Pen Company |Country=US |ApplicationNum=138841 |ApplicationDate=1926-10-01 |PatentNum=1669036 |PatentDate=1928-05-08 |PriorityDate=1926-10-01 |Titolo=Pen-gripping device |Marca=Parker |Desc...