American inventor Lee De Forest was a pioneer of radio and motion pictures. He received more than 300 patents over the course of his lifetime, the most important of which was for a three-electrode vacuum tube, or triode, that he called...

John Ambrose Fleming was an electronics pioneer who invented the oscillation valve, or vacuum tube, a device that would help make radios, televisions, telephones and even early electronic computers possible. A brilliant innovator,...

Siegmund Loewe was a German engineer and businessman that developed vacuum tube forerunners of the modern integrated circuit. He pioneered both radio and television broadcasting, and the company he established with his brother, David...