Piccardi
{{PatentInfo |Inventor=Ryosuke Namiki |Assignee=Ryosuke Namiki |Country=GB |ApplicationNum=10491/25 |ApplicationDate=1925-04-22 |PatentNum=247038 |PatentDate=1926-02-11 |PriorityDate=1925-04-22 |Titolo=Improvements in Methods of Working Upon Surfaces o...