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Pump-Jack

Description: Patent for a pump jack for operating the oil well pump rods.
Date: April 23, 1912
Creator: Seybert, Guy W.
Partner: UNT Libraries Government Documents Department

Pump Controlling Means

Description: Patent for a pump controlling means. This invention applies even pressures on the discharge line. Illustration included.
Date: August 23, 1904
Creator: Small, William
Partner: UNT Libraries Government Documents Department
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