Adding-Machine
Creation Information
Context
Audiences
patent as a primary source within our collections. Researchers, educators, and students may find this patent useful in their work.
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Titles
Subjects
Mapped Locations
Adding-Machine, patent, June 25, 1889; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth172083/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.