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.
Samuel Slocum Samuel Slocum (March 4, 1792 - January 26, 1861), was an American inventor from Poughkeepsie, New York. He was born in Jamestown, RI, son of Peleg Slocum and Anne Dyer Slocum. He was raised in Usquepaugh, RI, a village in South Kingstown, RI, where a Mr. William Lockwood sometime after 1772, first invented the common pin with a head, to keep it from slipping through cloth. Samuel was the 6th of 8 children. He worked as a carpenter before he decided to move to London and become a pin maker. He married Susan Stanton Slocum in 1817 at Richmond, RI, and had three children, Samuel Dyer Slocum, Mary Slocum, and John Stanton Slocum.