Items

• [PT5057B], Legal Testimony, Frank Lewis Dyer, Thomas Alva Edison, September 21st, 1916
  1916-09-21
• [PT5057C], Legal Decision, U.S. Patent Office. Examiners-in-Chief, January 13th, 1917
  1917-01-13
• [PT5062B], Legal Testimony, Frank Lewis Dyer, November 6th, 1915
  1915-11-06
• [PT5062C], Legal Decision, U.S. Patent Office. Examiners-in-Chief, January 6th, 1916
  1916-01-06
• [PT5086B], Legal Testimony, Thomas Alva Edison, Dyer and Holden, July 17th, 1917
  1917-07-17
• [PT5086E], Legal Decision, Francis Warfield Herrick Clay, U.S. Patent Office. Commissioner, September 24th, 1918
  1918-09-24
• [PT5086F], Letter from William Abbott Hardy to Thomas Alva Edison, April 10th, 1917
  1917-04-10
• [PT5115C], Letter from Thomas Alva Edison to William Abbott Hardy, 1919
  1919-00-00