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Grader-Blade.

Description: Patent for a new form of grader blade for road graders and ditchers for road and ditch work, with illustration.
Date: December 4, 1917
Creator: Wendell, Benjamin J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Weeder

Description: Patent for a weeder that breaks up the ground as well as cutting weeds.
Date: December 31, 1912
Creator: Wind, Iver Ebbesen
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Valve.

Description: Patent for improvement in valves, by means of assuring a tight operating stem. The stem is comprised of two movable sections incorporated into a design purposed to prevent leakage by the stem. Additional mentions include acknowledged awareness of susceptibility to change and modification, convenience and facility, and simplicity as related to cost.
Date: December 24, 1918
Creator: Pratt, Robert L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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