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Elbow-Joint for Artificial Arms

Description: Patent for an elbow joint for artificial arms that can be manipulated by the wearer into any desired position.
Date: July 23, 1918
Creator: Corley, Quentin D.
Partner: UNT Libraries Government Documents Department

Automatic Computing Device

Description: Patent for an automatic computing device that can calculate the price of goods and be used to take inventory of stock.
Date: July 23, 1912
Creator: Miracle, Meredith W.
Partner: UNT Libraries Government Documents Department

Counting Attachment for Type-Writers

Description: Patent for a counting attachment for type writers that provides signals when various word counts are reached.
Date: July 23, 1912
Creator: Walker, Jack L.
Partner: UNT Libraries Government Documents Department
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