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Elevator-Guide

Description: Patent for an elevator guide to be used for safety elevators used in mines. Illustrations included.
Date: December 29, 1908
Creator: Martini, Henry
Partner: UNT Libraries Government Documents Department

Reversible Garden-Plow.

Description: Patent for a walking-plow with simple and compact construction. The depth for plowing is adjustable to height of individual operating.
Date: December 23, 1902
Creator: Nicholas, Joseph W.
Partner: UNT Libraries Government Documents Department
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