UNT Libraries Government Documents Department - 3 Matching Results
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- Method of Regulating the Load on Rotary Drills.
- Patent for regulating the load on rotary drills, specifically those used in the oil and gas industry.
- Power Generating Unit for Locomotive Headlights
- Patent for an invention that makes the manufacturing of headlights inexpensive, while also keeping the headlights durable and able to fit in a relatively small space.
- Trowel.
- Patent for "new and useful improvements in Trowels." (lines 8-9) including instructions and illustrations.