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Lock

Description: Patent for a keyless combination lock, including illustrations.
Date: July 23, 1901
Creator: Katzenberger, Oscar
Partner: UNT Libraries Government Documents Department

Improvement in Fences.

Description: Patent for improvement in iron fences by using rails and bars to support the braced posts. All the parts are easily taken apart, this flexibility allows the fence to be set on uneven as well as on level ground. Illustration is included.
Date: July 23, 1872
Creator: Lerick, Isaac N.
Partner: UNT Libraries Government Documents Department

Propeller

Description: Patent for a boat propeller that does not create a vacuum behind it and is more efficient than other propellers.
Date: July 23, 1912
Creator: Blake, David H.
Partner: UNT Libraries Government Documents Department

Fish-Trap

Description: Patent for a fish trap. Illustrations included.
Date: July 23, 1912
Creator: Calvert, Walter Riley
Partner: UNT Libraries Government Documents Department
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