FAST-TRAX INTERNATIONAL COMMUNICATIONS INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4825303 Compressed audio silencingExpiredMay 18, 87Apr 25, 89[H04N]
4625240 Adaptive automatic gain controlExpiredJul 25, 84Nov 25, 86[H04N]
4429332 Television compressed audioExpiredMay 18, 81Jan 31, 84[H04N]
4426698 Television digital data frame with error detectionExpiredAug 24, 81Jan 17, 84[H04L, G06F]
4422093 Television burst serviceExpiredJan 27, 83Dec 20, 83[H04N]

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