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Vladimir Kosma ZWORYKIN
1923 to 1927 - Television is invented (Vladimir Kosma Zworykin (Russia), Philo Taylor Farnsworth (United States))

...Zworykin had a patent, but Farnsworth had a picture

Zworykin and his television
Zworykin is usually credited as being the father of modern television. This was because the patent for the heart of the TV, the electron scanning tube, was first applied for by Zworykin in 1923, under the name of an iconoscope. The iconoscope was an electronic image scanner - essentially a primitive television camera.

Farnsworth was the first of the two inventors to successfully demonstrate the transmission of television signals, which he did on September 7, 1927, using a scanning tube of his own design.
Farnsworth received a patent for his electron scanning tube in 1930.

Zworykin was not able to duplicate Farnsworth's achievements until 1934 and his patent for a scanning tube was not issued until 1938.

The truth of the matter is this, that while Zworykin applied for the patent for his iconoscope in 1923, the invention was not functional until some years later and all earlier efforts were of such poor quality that Westinghouse officials ordered him to work on something "more useful"...

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