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in creator/contributor: "Martin, William A."  
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Stalk Outter

Description: Patent for an invention for improvement upon stalk cutters. It was submitted for patent on June 3, 1913 and patented on November 25, 1913.
Date: unknown
Creator: Martin, William A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Plow-Facing

Description: Patent for an improvement on the coating and plastic facing of the mold boards and shovels on a plow.
Date: May 12, 1914
Creator: Martin, William A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Moldboard

Description: Patent for improvements in plow mold-boards, specifically for shedding sticky soil, and includes illustrations and description.
Date: April 8, 1913
Creator: Martin, William A. & Coleman, Robert J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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