Econolite Control Products, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4907160 Intersection monitorExpiredJun 10, 88Mar 06, 90[G06F]
4814765 Method and apparatus for displaying the status of a system of traffic signalsExpiredJun 16, 87Mar 21, 89[G08G]
4510549 Power supply voltage monitor and control systemExpiredApr 23, 84Apr 09, 85[H02H]
4472714 Clock synchronization circuit for control of traffic signalsExpiredJan 21, 83Sep 18, 84[G08B, G08G]
4462031 Traffic synchronization deviceExpiredJan 21, 83Jul 24, 84[G08B, G08G]

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