9 Interesting Facts About Famous Inventors

9 Interesting Facts About Famous Inventors

9 Interesting Facts About Famous Inventors On March 30, 1858, inventor Hymen L Lipman patented the first pencil with a built-in eraser—then sold it for $100,000 Believe it or not, this is not the first time in history that a little stick of

9 Interesting Facts About Famous Inventors

9 Interesting Facts About Famous Inventors

9 Interesting Facts About Famous Inventors

9 Interesting Facts About Famous Inventors

9 Interesting Facts About Famous Inventors

9 Interesting Facts About Famous Inventors

9 Interesting Facts About Famous Inventors

9 Interesting Facts About Famous Inventors

Unusual Facts About Famous Inventors