• publisher: Press of Gedney & Roberts co.
  • creator: Joseph Meredith Toner
  • contributor: University of Michigan
  • mediatype: texts
  • years: 1892
  • pages: 87
  • language: English
  • notes: "Reprint from Proceedings of the Patent centennial congress, held in Washington, D. C., 1891."
  • download: pdf file