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Wrench.

Description: Patent for a wrench specifically made to remove well drill bits from the drill.
Date: April 13, 1920
Creator: Stover, Willard L.
Partner: UNT Libraries Government Documents Department

Priming Cup for Internal Combustion Motors

Description: Patent for "Improvements in Priming-Cups for Internal-Combustion Motors" (lines 4-5) including illustrations.
Date: February 3, 1920
Creator: Martinek, Stanley A.
Partner: UNT Libraries Government Documents Department

Guard.

Description: Patent for a guard for marine vessels against torpedoes.
Date: September 21, 1920
Creator: Muncy, David J.
Partner: UNT Libraries Government Documents Department
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