Traffic Signal System
Description:
Patent for a Traffic Signal System for universal traffic management, i.e. automobiles, pedestrians, railway, street car, etc. The system has a warning signal to indicate danger and designate a safety zone. This system provides an audible as well as visual signal.
Date:
July 21, 1921
Creator:
Wetter, R. E.
Item Type:
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Partner:
UNT Libraries Government Documents Department