UNT Libraries Government Documents Department - 3 Matching Results
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- Clothes-Pin
- Patent for a clothes pin. Illustrations included.
- Insecticide Composition.
- Patent for an insecticide to kill red ants and "other noxious insects" (line 9).
- Track-Leveling Device.
- Patent for a railroad track leveling device, which attaches to the rails without the use of screws and can be used to detect low places and misalignment's of the track.