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Rotary Hand-Stamp.

Description: Patent for a rotary hand stamp that has an interchangeable printing surface that is simple, convenient, and is especially created for rapid operation.
Date: March 19, 1912
Creator: Walshe, Denny Edmund
Partner: UNT Libraries Government Documents Department

Washing Machine

Description: Patent for a washing machine. Illustration included.
Date: March 28, 1911
Creator: Vines, James W.
Partner: UNT Libraries Government Documents Department
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