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Plow.

Description: Patent for a new and useful plow, including instructions and illustrations.
Date: July 12, 1898
Creator: Ankarstolpe, Nels.
Partner: UNT Libraries Government Documents Department

Saw Tooth

Description: Patent for "Improvement in Saw Teeth" (line 3)
Date: July 12, 1870
Creator: Littlepage, Caleb V.
Partner: UNT Libraries Government Documents Department
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