H04N 9/20
Picture reproducers using cathode ray tubes using separate electron beams for the primary colour signals with more than one beam in a tube
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Edits on 16 Mar, 2022
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Edits on 5 Mar, 2022
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H04N 9/20
Picture reproducers using cathode ray tubes using separate electron beams for the primary colour signals with more than one beam in a tube
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