Piccardi
{{PatentInfo |Inventor=Francis Charles Jarvis, Thomas Howard Garner |Assignee=Conway Stewart & Co. |Country=GB |ApplicationNum=190804840 |ApplicationDate=1908-03-03 |PatentNum=190804840 |PatentDate=1909-01-14 |PriorityDate=1908-03-03 |Titolo=Improvemen...