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Hydraulic Swivel

Description: Patent for a hydraulic swivel. Illustrations included.
Date: September 26, 1905
Creator: Thomson, Alexander & McLaughlin, Malacha Joseph
Partner: UNT Libraries Government Documents Department

Patent for Plow

Description: Patent for a wing plow.
Date: December 26, 1916
Creator: Moore, William F.
Partner: UNT Libraries Government Documents Department
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