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Air-Brake Mechanism.

Description: Patent for "a new and useful air-brake mechanisms in relation to a pressure controller and distributer designed to perform the several independent and joint functions of a triple valve, a pressure-retaining valve, and a pressure relief or reducing valve."
Date: May 29, 1900
Creator: Dillander, John
Partner: UNT Libraries Government Documents Department

Ariel Navigation

Description: Patent for an airplane which will maintain its balance in the air and can be easily maneuvered up and down and around in the air.
Date: May 9, 1911
Creator: Nichols, Jack Lloyd
Partner: UNT Libraries Government Documents Department
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