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Patent for a new and useful improvement in pump rod operating devices for windmills, including instructions and illustrations.

Date: May 9, 1899

Creator: Vernon, William E.

Partner: UNT Libraries Government Documents Department

Patent for a counterbalancing device for windmill pumps, which reduces friction and lateral pull on the pump.

Date: March 9, 1909

Creator: Cotten, Charles Kavendor

Partner: UNT Libraries Government Documents Department