UNT Libraries Government Documents Department - 3 Matching Results

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Patent for an automobile jack that lifts the vehicle so that necessary repairs can be made and that relieves constant pressure of the tires.

Date: January 18, 1916

Creator: Davidson, Charles Edward

Patent for Measuring Instrument for Curved Surfaces

Date: December 5, 1916

Creator: Mckinney, Elnathan J.

Patent for a nut lock. Illustrations included.

Date: February 15, 1910

Creator: Davidson, Charles E. & Mauldin, Blake I.