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G08G1/00—Traffic control systems for road vehicles
G08G1/09—Arrangements for giving variable traffic instructions
G08G1/096—Arrangements for giving variable traffic instructions provided with indicators in which a mark progresses showing the time elapsed, e.g. of green phase
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FR1085577D1953-10-231953-10-23
Signaling device, in particular for urban traffic
ExpiredFR1085577A
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