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Zenith introduced the first black-matrix CRTs in 1969 with their first Chromacolor sets for the 1969-70 model years for TV sets. Zenith would then set the standard for many years to come when it came to color CRTs. The first black-matrix CRTs were detla-gun tubes with black-matrix inline CRTs coming on the scene in about 1974-75. The Toshiba Blackstripe CRT is a well-known early black matrix inline CRT.
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