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Pump

Description: Patent for improvements to pumps in working barrels, packing, and packing chambers, the purpose of which is to eliminate easily worn parts and improve the efficiency of these pumps, including illustrations.
Date: November 28, 1922
Creator: Kerr, Michael A.
Partner: UNT Libraries Government Documents Department

Casing-Pulling Apparatus.

Description: Patent for an apparatus to more easily and more economically remove well-casings from the ground when an oil well is no longer in use.
Date: November 29, 1921
Creator: Wilson, John Hart
Partner: UNT Libraries Government Documents Department

Automobile-Signal.

Description: Patent for turn signal improvements with an aim to improve visibility of signal and ease of replacement with the goal of communicating vehicular movement and reducing accidents.
Date: November 15, 1921
Creator: Squier, William Ernest
Partner: UNT Libraries Government Documents Department
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