PRODUCT ACTIVATION CORPORATION

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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Expired/Abandoned/Withdrawn Patents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
6789198 Information distribution and processing systemExpiredSep 17, 02Sep 07, 04[H04N, H04L, G06F]
5077608 Video effects system able to intersect a 3-D image with a 2-D imageExpiredSep 19, 90Dec 31, 91[H04N]
5051928 Color correction for video graphics systemExpiredDec 28, 87Sep 24, 91[G06F]

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