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Electric Heater

Description: Patent for an electric heater that is insulated from foreign bodies or fluids. Illustrations included.
Date: February 28, 1911
Creator: Harvie, Arthur H. & Davis, William G.
Partner: UNT Libraries Government Documents Department

Apparatus for Boring Artesian Wells.

Description: Patent for an improved and simple apparatus for boring wells that is easily adjustable. The drill head will stay intact in most drilling situations with this apparatus.
Date: February 28, 1893
Creator: Brown, Frank O.
Partner: UNT Libraries Government Documents Department
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