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Automatic Railway-Switch.

Description: Patent for new and useful Improvements in Automatic Railway-Switches, "particularly to automatic railway switches for use in street railways or steam railways" (lines 13-15), including instructions and illustrations.
Date: August 21, 1917
Creator: Eisenberg, Louis
Partner: UNT Libraries Government Documents Department

Traffic-Signal.

Description: Patent for a traffic signal apparatus for installation in automobiles, including illustrations.
Date: August 21, 1917
Creator: Valdes, Salvador M.
Partner: UNT Libraries Government Documents Department
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