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Cotton-Chopper.

Description: Patent for a cotton chopper, which can operate in uneven soil and attaches to a cultivator.
Date: July 28, 1908
Creator: Allen, John W.
Partner: UNT Libraries Government Documents Department

Air-Brake Governor

Description: 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.
Date: July 10, 1906
Creator: Williams, Leonard F.
Partner: UNT Libraries Government Documents Department
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