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Plow.

Description: Patent for the improvement on plows so that the operator can "readily adjust the moldboard or shovel into any desired inclination" (lines 14-15). The clamp is also adjustable.
Date: June 8, 1897
Creator: Baker, Jessie
Partner: UNT Libraries Government Documents Department

Excavator and Conveyer.

Description: Patent for an excavator machine designed "to continuously excavate the ground at different elevations, as in ditching or cutting away embankments" (lines 15-18) including illustrations.
Date: January 6, 1914
Creator: Lee, James Milton
Partner: UNT Libraries Government Documents Department
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