Improvement in Angle-Plates for Doors. Page: 1 of 3
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Improvement in Angle-Plates for Doors., patent, October 14, 1879; Washington D.C.. (https://texashistory.unt.edu/ark:/67531/metapth169903/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.