UNT Libraries Government Documents Department - 2 Matching Results
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- Improvement in Mold-Boards for Plows.
- Patent for an improved design for plow mold-boards that involves using holes and a water pump to keep the mold-board clear of earth.
- Improvement in Stone-Dressing Tools.
- Patent for "an improved rotary hand-tool for dressing stone" (lines 7-8) including instructions and illustrations.