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Reference the current page of this Patent.
Wrench., patent, December 28, 1897; [Washington D.C.]. (texashistory.unt.edu/ark:/67531/metapth512625/m1/1/: accessed February 17, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting UNT Libraries Government Documents Department.