UNT Libraries Government Documents Department - 4 Matching Results

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Air-Brake Governor: Patent for an air brake governor improvement that regulates the pressure of fluid or air in the braking system as to prevent it from braking with too much pressure.
Engine: Patent for improvements to gas engines, including the addition of improved pistons.
Plow Attachment.: Patent for the ability to attach one or more plows simply and inexpensively so users can customize their plowing methods as needed.
Wrench.: Patent for a wrench with an adjustable handle for multiple uses, with illustrations.