Piccardi
{{PatentInfo |Inventor=William L. Cannif |Assignee=The Parker Pen Company |Country=US |ApplicationNum=141973 |ApplicationDate=1926-10-16 |PatentNum=1669040 |PatentDate=1928-05-08 |PriorityDate=1926-10-16 |Titolo=Pen-gripping device |Marca=Parker |Descr...