Surface-Treating Machine. Page: 2 of 5
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Surface-Treating Machine., patent, October 19, 1920; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1258620/m1/2/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.