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Insulator.

Description: Patent for a train track insulator, which acts as a fastener between adjourning portions of track.
Date: March 29, 1921
Creator: Collier, William R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Potato Digger.

Description: Patent for "new and useful improvements in potato-diggers, designed to cut away the vines and to throw them out of the way of the plow-points." (lines 5-10) including instructions and illustrations.
Date: May 22, 1900
Creator: Winfrey, Zachary T.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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