Piccardi
{{PatentInfo |Inventor=William P. De Witt |Assignee=William Price De Witt |Country=GB |ApplicationNum=23159/20 |ApplicationDate=1920-08-06 |PatentNum=171154 |PatentDate=1921-11-07 |PriorityDate=1920-04-19 |Titolo=Improvements in pencil holders |Marca=D...