Improvement in Plates for Holding Screw-Cutting Dies.
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patent as a primary source within our collections. Researchers, educators, and students may find this patent useful in their work.
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Improvement in Plates for Holding Screw-Cutting Dies., patent, October 14, 1879; Washington D.C.. (https://texashistory.unt.edu/ark:/67531/metapth169905/: accessed July 7, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.