Piccardi
{{PatentInfo |Inventor=Walter E. Guyot |Assignee=The Parker Pen Company |Country=US |ApplicationNum=375957 |ApplicationDate=1929-07-05 |PatentNum=1772000 |PatentDate=1930-08-05 |PriorityDate=1929-07-05 |Titolo=Desk-set receptacle and gripper |Marca=Par...