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Pipe-Cutter

Description: Patent for improved pipe cutters that indicate when a pipe has been completely severed inside of a well
Date: May 11, 1920
Creator: Wright, John F.
Partner: UNT Libraries Government Documents Department

Apparatus for Raising Liquids from Deep Wells.

Description: Patent for improvements for raising liquids from deep wells. "It has a particular application to the raising of fused sulfur from the well in the liquid state" (lines 14-16).
Date: May 11, 1920
Creator: Hebert, Joseph A.
Partner: UNT Libraries Government Documents Department
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