UNT Libraries Government Documents Department - 1 Matching Results
Search Results
- Combination Heel-Sweep Plow.
- Patent for an improved plow that can have "either first a whole heel sweep, or a right or left half heel sweep, second a whole solid sweep, or a right or left half solid sweep, third a right and left turn plow, or a right or left half turn plow" (lines 15-19).