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Automatic Gas Valves
Patent for automatic gas valve that will close if the pressure is detected to be too low.
Date:
December 5, 1916
Creator:
Chism, Sylvester J.
System:
The Portal to Texas History
Plow Foot
Patent for a plow or cultivator foot.
Date:
December 19, 1916
Creator:
Williams, Budicille B.
System:
The Portal to Texas History