Piccardi
{{PatentInfo |Inventor=Leslie William Johnson, Edward Stephen Sears |Assignee=Mabie, Todd & Company Limited |Country=GB |ApplicationNum=33373/46 |ApplicationDate=1946-11-09 |PatentNum=623767 |PatentDate=1949-05-23 |PriorityDate=1946-11-09 |Titolo=Impro...