Piccardi
{{PatentInfo |Inventor=Heinrich Hebborn, Heinrich Schlicksupp |Assignee=H. Hebborn & Co. |Country=GB |ApplicationNum=35295/35 |ApplicationDate=1935-12-20 |PatentNum=451168 |PatentDate=1936-07-30 |PriorityDate=1935-06-29 |Titolo=Improvements in or relat...