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Roof-Jack

Description: Patent for a roof jack that will hold up scaffolding.
Date: February 25, 1913
Creator: Darnall, Benjamin P.
Partner: UNT Libraries Government Documents Department

Dumping-Cart

Description: Patent for a dumping cart with a body that locks to the frame, but can be released quickly to dump materials via two toggle arms connected to a crank handle. Including illustrations and instructions.
Date: February 25, 1903
Creator: Davis, Frank C.
Partner: UNT Libraries Government Documents Department
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