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Wire-Clamp.
Patent for a wire clamp.
Date:
July 14, 1914
Creator:
Peckenpaugh, John Ervin
System:
The Portal to Texas History
Rail-Joint.
Patent for railroad joint designed to reduce the shifting of the rails while being easy to construct.
Date:
July 10, 1917
Creator:
Autry, Lemual Arlanda
System:
The Portal to Texas History