CTBA Associates

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Patent Activity in the Last 10 Years

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4658290 Television and market research data collection system and methodExpiredOct 05, 84Apr 14, 87[H04H]
4566030 Television viewer data collection systemExpiredJun 09, 83Jan 21, 86[H04N]
4546382 Television and market research data collection system and methodExpiredDec 08, 83Oct 08, 85[H04N]

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