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in publisher: "United States. Patent Office."  
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Apparatus for Obtaining a Vacuum.

Description: Patent for a new and improved vacuum. This design utilizes a liquid pump, plates, tubes and valves to make "about as perfect a vacuum . . . as can be obtained by an ordinary pump" (lines 53-55).
Date: July 27, 1880
Creator: Ward, Lyman Henry
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Partner: UNT Libraries Government Documents Department

Bank-Check Writer.

Description: Patent for a new and useful improvements in Bank-Check Writers. With this device, a blank check may be inserted and the name of the payee and the amount in figures will be typewritten.
Date: May 18, 1920
Creator: Wendelken, Charles
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Partner: UNT Libraries Government Documents Department

Corn-Husker.

Description: Patent for a new and improved machine for husking corn using a rotating wheel with spurs and cutters with combination of a stationary and movable concaves, including illustration.
Date: March 9, 1858
Creator: Fagan, Joseph & Fagan, James L.
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Partner: UNT Libraries Government Documents Department

Tractor.

Description: Patent for new and improved tractors on farms that are capable of pulling plows, cultivators, seed planters and other similar types of devices.
Date: October 5, 1920
Creator: Lindner, Hans
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Partner: UNT Libraries Government Documents Department

Priming Device

Description: Patent for a priming device. Intent of the priming device is to provide improvements to priming devices in internal combustion engines.
Date: May 16, 1919
Creator: Donada, Benito J
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Partner: UNT Libraries Government Documents Department

Envelop.

Description: Patent for an adjustable envelop design for storing documents and articles. This is a design with flaps within the inner fold that are made to secure and protect the document. Straps that extend from the outer edge secure the outer flap over the contents as well as the inner protective flaps.
Date: November 28, 1911
Creator: Low, Eugene
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Partner: UNT Libraries Government Documents Department
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