UNT Libraries Government Documents Department - 2 Matching Results
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- Improvement in Jack-Screws and Clamps Combined.
- Patent for an invention "to combine a jack-screw or lifting-jack with a clamp, so that they may be interchangeably used." (Lines 19-21) Includes instructions and illustrations.
- Improvement in Windmills
- Patent for the improvement of wind mills, that includes a detailed description as well as labeled figure drawings.