UNT Libraries Government Documents Department - 3 Matching Results
Search Results
- Egg Beater
- Patent for an egg beater. Illustration included.
- Grab for Pump and Drill Rods.
- Patent for a grabbing device for pump and drill rods in wells to lift them out of the well.
- Valve-Controlling Mechanism for Train-Air-Brake Systems
- Patent for a valve controlling mechanism for train air brake systems that can be used when a car derails.