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Cistern-Guard.

Description: Patent for a device that guards the water cistern against impure water which drains from the roof of a building to which the cistern appertains.
Date: March 26, 1912
Creator: Johnson, Charles W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Boll-Weevil Destroyer.

Description: Patent for a boll weevil or insect exterminating device on wheels for use outdoors, including illustrations.
Date: September 11, 1917
Creator: Graves, James Newell
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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