Indicator
Description:
Patent for a vehicle indicator that indicates speed using a sound and light. "The driver may be warned when a certain speed is reached and so officers of the law and others may readily tell by glancing at the vehicle whether or not it is exceeding the speed limit."
Date:
February 9, 1915
Creator:
Hartman, Arthur R.
Item Type:
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Patent
Partner:
UNT Libraries Government Documents Department