PA MANGEMENT CONSULTANTS LIMITED

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4616237 Data storage mediumExpiredSep 26, 83Oct 07, 86[B05D, G03C, G01D, B32B]
4563080 Electrophotographic liquid developing apparatus and methodExpiredJan 16, 84Jan 07, 86[G03G]
4524116 Electrophotographic contact printing and master thereforeExpiredMay 17, 83Jun 18, 85[G03G]
4486870 Optical data storageExpiredJul 19, 82Dec 04, 84[G03B, G11B]
4427714 Thin films of compounds and alloy compounds of Group III and Group V elementsExpiredJan 08, 82Jan 24, 84[C04B]
4349095 Coin discriminating apparatusExpiredSep 12, 79Sep 14, 82[G07F]
4320941 Optical compensators for cinematographyExpiredOct 22, 79Mar 23, 82[G03B]
4237396 Electromagnetic machines with permanent magnet excitationExpiredSep 29, 78Dec 02, 80[H02K]

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