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Reference the current page of this Patent.
Hay-Press., patent, August 11, 1891; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth172761/m1/2/: accessed April 19, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.