![Technology / Rockefeller Center / RCA / National Broadcasting Company / Technicolor SA / Color television / WNBC / Kinescope / NBC / Television / Television technology / Electronic engineering Technology / Rockefeller Center / RCA / National Broadcasting Company / Technicolor SA / Color television / WNBC / Kinescope / NBC / Television / Television technology / Electronic engineering](https://www.pdfsearch.io/img/4488d324cc459a9613ae894695c38872.jpg) Date: 2013-07-12 12:22:26Technology Rockefeller Center RCA National Broadcasting Company Technicolor SA Color television WNBC Kinescope NBC Television Television technology Electronic engineering | | Television History - A Timeline[removed]William Crookes confirmed the existence of cathode rays by building a tube to display them in. 1897
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