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Pipe-Pulling Device.

Description: Patent for a device for pulling pipes from wells without damaging the pipe, with a safety feature in case the pipe breaks.
Date: September 25, 1917
Creator: Osborne, William R.
Partner: UNT Libraries Government Documents Department

Pipe Clamping Device

Description: Patent for improvements of a pipe-clamping device which is durable and easy to construct.
Date: August 25, 1915
Creator: Lincoln, Robert A.
Partner: UNT Libraries Government Documents Department
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