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Pipe-Wrench.

Description: Patent for improvement of the pipe-wrench by simplification in structural details.
Date: August 1, 1916
Creator: Stone, John E.
Partner: UNT Libraries Government Documents Department

Cotton-Chopper.

Description: Patent for a cotton chopper that attaches to a cultivator.
Date: August 15, 1911
Creator: Hester, James R.
Partner: UNT Libraries Government Documents Department
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