Piccardi
{{PatentInfo |Inventor=William Roderick Johnson |Assignee=Mentmore Manufacturing Company Limited |Country=DE |ApplicationNum=M10894 |ApplicationDate=1951-09-06 |PatentNum=856273 |PatentDate=1952-11-20 |PriorityDate=1950-09-11 |Titolo=Feder fuer Fuellf...