UNT Libraries Government Documents Department - 4 Matching Results
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- Improvement in Pen-Holders.
- Patent for new improvements on the design of the pen-holder, including illustrations.
- Listing-Plow.
- Patent for a listing plow that can be used in any type of soil.
- Nut-Lock.
- Patent for new qualities of nut-lock security, efficiency, and convenience, including illustrations.
- Railway-Track Brace
- Patent for a brace for railway tracks. Illustrations included.