Improvement in Buildings. Touaillon, J. 1870. United States Patent Office 99,973
Improvement in Buildings [link]Paper  bibtex   
@Misc{Touaillon1870,
  author = {Jules Touaillon},
  title  = {Improvement in Buildings},
  year   = {1870},
  note   = {United States Patent Office 99,973},
  url    = {https://patents.google.com/patent/US845046A/},
}
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