Sponsored Links Leon Douglass Complete Dating History Add new Post Sponsored Links Leon Douglass wiki Login to Edit Bio: Revolutionized the art of picture and sound recordings. He had patents on the phonograph and nearly 50 other important inventions. He worked as a telegraph messenger at age 11 and was a telephone exchange manager by age 16.Date of Birth: 12 Mar, 1869Zodiac Sign: PiscesPlace of Birth: NebraskaDied: 71 years agoDate of Death: 07 Sep, 1940Profession: Entrepreneur Show more bio data > Leon Douglass Latest Videos
