Window Ventilation. Page: 1 of 4
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Window Ventilation., patent, February 8, 1910; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth514327/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.