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Door Operating and Locking Means

Description: Patent for improved locking means for sliding doors.
Date: January 9, 1917
Creator: Freeman, Richard J.
Partner: UNT Libraries Government Documents Department

Rail-Clamp.

Description: Patent for a rail clamp that prevents rail spreading.
Date: April 9, 1912
Creator: Korges, Emil H.
Partner: UNT Libraries Government Documents Department
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