ZELLERBACH, GARY

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5175698 Method and system for transfer function measurementExpiredJul 23, 90Dec 29, 92[G06F]
5144460 High contrast-resolution cameraExpiredDec 11, 90Sep 01, 92[G02B, G03H, G06K]
5138468 Keyless holographic lockExpiredFeb 02, 90Aug 11, 92[G06K]
5056880 Holographic wallpaperExpiredApr 08, 90Oct 15, 91[G03H]

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