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Aeroplane.

Description: Patent for an aeroplane with a propeller, which is "pivotally mounted and adjustable into different positions relative to the planes in order to produce either a rising movement or thereof or a driving movement in a horizontal or other plane" (lines 26-30).
Date: September 19, 1911
Creator: Andrae, Ernest H.
Partner: UNT Libraries Government Documents Department

Compressor.

Description: Patent for a refrigerating machine compressor, which compresses more gas, cools the compressor with the incoming gas, and uses excess heat to dry the gas coming in.
Date: April 19, 1910
Creator: Mayhew, John Daugherty
Partner: UNT Libraries Government Documents Department

Coin-Sorter.

Description: Patent for a coin sorter that sorts coins according to their dimensions and places in a receptacle with removable bottom cover to collect the sorted coins.
Date: August 19, 1913
Creator: Haynie, Brooks
Partner: UNT Libraries Government Documents Department
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