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Pump.

Description: Patent for an improvement in pumps.
Date: September 18, 1888
Creator: Vanmeter, James Wright
Partner: UNT Libraries Government Documents Department

Computing-Scale.

Description: Patent for a computing scale for weighing items and calculating their price per pound.
Date: September 26, 1911
Creator: Cameron, Clyde M.
Partner: UNT Libraries Government Documents Department
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