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Switch and Signal System

Description: Patent for a switch and signal system to be used for railroad signaling and to prevent trains on different tracks from colliding. (lines 12-22)
Date: December 12, 1905
Creator: Adams, Edwin J.
Partner: UNT Libraries Government Documents Department

Traction Engine.

Description: Patent for an improved version of traction engine with ambulatory wheels that improve the design, including instructions and illustrations.
Date: December 12, 1916
Creator: Altgelt, Herman E.
Partner: UNT Libraries Government Documents Department
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