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Automatic drain-valve.
Patent for an improved automatic drain valve used in air braking systems.
Date:
April 21, 1914
Creator:
Huddleston, William R.
System:
The Portal to Texas History
Self-Filling Tire
Patent for a product that automatically inflates automobile tires with the motion and weight of the moving vehicle, with the help of a piston that is not driven by springs.
Date:
April 20, 1915
Creator:
Fernandez, Jose
System:
The Portal to Texas History