These mechanical TV systems were quickly superseded ... the 1920s before [John Logie Baird] would develop the first working television system using [Nipkow]’s invention. [Baird] with his ...

John Logie Baird (1888-1946) applied for a patent for a mechanical television in 1923. He ran successful experiments in transmitting images in 1926, and in 1930 he worked with the British ...

40 years later, two of Baird's assistants – Tony Bridgewater and D.R. Campbell – demonstrated how mechanical television worked, on Review.