Loading and Unloading Mechanism for Mixing-Drums or Other Receptacles Page: 4 of 10
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Loading and Unloading Mechanism for Mixing-Drums or Other Receptacles, patent, May 27, 1913; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth853806/m1/4/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.