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Mechanical device for signalling to three directions by hexagons and more generally all polygons, prisms or parallelepipeds in rotation and manoeuvrésde the rear to the front of vehicles of all kinds, by means of a single cable
Mechanical device for signalling to three directions by hexagons and more generally all polygons, prisms or parallelepipeds in rotation and manoeuvrésde the rear to the front of vehicles of all kinds, by means of a single cable
