Controlled Information Corporation

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4791412 Magnetic article surveillance system and methodExpiredJan 28, 88Dec 13, 88[G08B]
4779076 Deactivatable coded marker and magnetic article surveillance systemExpiredMay 20, 87Oct 18, 88[G08B]
4675657 Electromagnetic surveillance system with improved signal processingExpiredMar 10, 86Jun 23, 87[G08B]
4622542 Magnetic article surveillance system, method and coded markerExpiredJun 26, 85Nov 11, 86[G08B]

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