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Publication of FR804806ApublicationCriticalpatent/FR804806A/fr
G08G1/00—Traffic control systems for road vehicles
G08G1/07—Controlling traffic signals
G08G1/085—Controlling traffic signals using a free-running cyclic timer
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FR804806D1936-04-031936-04-03Dispositif pour commander automatiquement la signalisation pour la régulation de la circulation urbaine
ExpiredFR804806A
(fr)