Elmer Tiling Cunningham an American entrepreneur was in direct violation by infringing on patents of a British electrical engineer known for inventing the first what?
John Ambrose Fleming Sir John Ambrose Fleming FRS (29 November 1849 – 18 April 1945) was a British electrical engineer and physicist. He is known for inventing the first thermionic valve or vacuum tube. He is also famous for the left hand rule (for electric motors). He was born the eldest of seven children of James Fleming DD (died 1879), a Congregational minister, and his wife, Mary Ann, at Lancaster, Lancashire and baptised on 11 February 1850.
George Richards Elkington George Richards Elkington (17 October 1801 – 22 September 1865) was a manufacturer from Birmingham, England. He patented the first commercial electroplating process.