Purification of Gases. Page: 6 of 6
Reference the current page of this Patent.
Purification of Gases., patent, December 8, 1914; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth859544/m1/6/?rotate=270: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.