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Drag
Patent for a ground drag for "grading and removing refuse from the surface of the soil" (lines 10-12) that can be steered and that can gather and dispose of the dirt it levels off, including illustrations.
Date:
May 11, 1920
Creator:
Nelson, Charley E.
System:
The Portal to Texas History
Hopple.
Patent for a hopple, which keeps the beams of a cultivator in place.
Date:
August 11, 1908
Creator:
Gilbert, Edward Leslie
System:
The Portal to Texas History