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Patent for a nut lock that keeps bolts attached extra tightly.

Date: January 31, 1911

Creator: Greer, Benjamin J.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Patent for a nut lock that is easy to manufacture.

Date: January 3, 1911

Creator: Dowell, Lawson H.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Patent for an improvement or update to a device called a road-grader. This patented upgrade will make the use of a road-grader easier.

Date: January 18, 1916

Creator: Harris, Elie B.

Item Type: Patent

Partner: UNT Libraries Government Documents Department