Improvement in Combining Bitumen and Clay.
Creation Information
Context
Audiences
patent as a primary source within our collections. Researchers, educators, and students may find this patent useful in their work.
We've identified thisContact Us
Subjects
Mapped Locations
Improvement in Combining Bitumen and Clay., patent, September 24, 1872; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth166801/: accessed June 6, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.