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Nut-Lock

Description: Patent for a nut lock. Illustrations included.
Date: February 15, 1910
Creator: Davidson, Charles E. & Mauldin, Blake I.
Partner: UNT Libraries Government Documents Department

Pump.

Description: Patent for a new and useful improvements in pumps.
Date: March 15, 1898
Creator: Mauldin, Alfred W.
Partner: UNT Libraries Government Documents Department
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