Items

• [PT010ABS], Letter from Richard Nott Dyer to U.S. Patent Office. Commissioner, February 28th, 1895
  1895-02-28
• [PT017AAP], Letter from Dyer and Seely to U.S. Patent Office. Commissioner, February 28th, 1895
  1895-02-28
• [PT017AAU], Letter from Dyer and Seely to U.S. Patent Office. Commissioner, November 21st, 1896
  1896-11-21
• [PT017AAX], Letter from Dyer and Seely to U.S. Patent Office. Commissioner, September 30th, 1897
  1897-09-30
• [PT031AAN], Patent Caveat, Thomas Alva Edison, June 18th, 1896
  1896-06-18