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3 Matching Results
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Paint.
Patent for paints for roofs and for barns to prevent leaks and efficient in preserving the material of buildings at a relatively small costs.
Date:
July 20, 1920
Creator:
Watson, Grover C.
System:
The Portal to Texas History
Sling-Shot.
Patent for a sling shot that is more durable, efficient, and less likely to break. Includes instructions and one illustration.
Date:
July 13, 1920
Creator:
Jones, Ralph L.
System:
The Portal to Texas History
Underreamer for Reaming Out Producing-sands.
Patent for "underreaming tools or bits which can be adjusted from the top of the well and which can be set at the required angle..."
Date:
September 21, 1920
Creator:
Lambeth, Acey L.
System:
The Portal to Texas History