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in creator/contributor: "Ackman, George, Jr."  
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Valve

Description: Patent for improvement to a valve design, with illustrations.
Date: January 8, 1907
Creator: Pinkerton, Henry S.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Tie Bar

Description: Patent for a tie bar. Illustration included.
Date: January 17, 1905
Creator: Mareburger, Robert Julius
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Cotton Chopping Machine

Description: Patent for a cotton chopping machine. This invention is used to thin cotton plants with revolving blades that cut and destroy plants. Illustrations included.
Date: January 29, 1907
Creator: Tucker, Samuel Houston
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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