Items

Items

• 

  [PT5106], Patent Application, Thomas Alva Edison, Jr., March 3rd, 1919

  1919-03-03
• 

  [PT5109], Patent Application, Thomas Alva Edison, May 27th, 1919

  1919-05-27
• 

  [PT5126], Patent Application, Thomas Alva Edison, November 25th, 1921

  1921-11-25
• 

  [PT5129], Patent Application, Thomas Alva Edison, Jr., October 18th, 1922

  1922-10-18
• 

  [PT5133], Patent Application, Thomas Alva Edison, December 7th, 1923

  1923-12-07
• 

  [PT5142], Patent Application, Thomas Alva Edison, Jr., January 9th, 1930

  1930-01-09