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in creator/contributor: "Campbell, Singleton"  
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Plant-Protector.

Description: Patent for a cloth device that protects plants from wind, while admitting sufficient light to the plant, including illustrations.
Date: September 29, 1914
Creator: Campbell, Singleton
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Disk Plow.

Description: Patent for a revolving disk plow that pulverizes the soil. The plow is especially designed to prepare the soil for cotton and cultivating between rows of crops. It has a tongue, a cross-bar with a sloping edge, spindles set at an angle to the cross-bar, disks mounted on the spindles, a double scraper for the disks, a gage-wheel, and a pivoting and locking lever on the tongue.
Date: January 28, 1896
Creator: Campbell, Singleton
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Disk Plow.

Description: Patent for certain new and useful improvements in disk plows, including instructions and illustrations.
Date: October 18, 1898
Creator: Campbell, Singleton
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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