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Water-Motor.

Description: Patent for a water motor that is operated by the current.
Date: November 7, 1911
Creator: Gonzalez, José
Partner: UNT Libraries Government Documents Department

Rear Sight for Guns

Description: Patent for a rear sight for firearms, particularly larger firearms such as service rifles or other field artillery and machine guns.
Date: November 18, 1919
Creator: Kaempfer, Effie May Wagner
Partner: UNT Libraries Government Documents Department
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