Gate-Operating Device
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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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Mapped Locations
Gate-Operating Device, patent, February 24, 1920; Washington D.C.. (https://texashistory.unt.edu/ark:/67531/metapth1258678/: accessed May 9, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.