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Tool for Unscrewing Pipe-Joints from Wells
Patent for "new and useful Improvements in Tools for Unscrewing Pipe-Joints from Wells" (lines 5-6). "The object of the invention is to provide a device... whereby the joints of pipe that have become stuck in the well may be unscrewed and withdrawn" (lines 12-16).
Date:
September 3, 1918
Creator:
Matula, Joseph R.
System:
The Portal to Texas History