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Door Operating and Locking Means
Patent for improved locking means for sliding doors.
Date:
January 9, 1917
Creator:
Freeman, Richard J.
System:
The Portal to Texas History
Rail-Clamp.
Patent for a rail clamp that prevents rail spreading.
Date:
April 9, 1912
Creator:
Korges, Emil H.
System:
The Portal to Texas History