Saturday, February 23, 2013

Calculators

 

    William Seward Burroughs Born 1857 Rochester, N.Y - Died 1898
   In 1885, Burroughs filed his first patent for a calculating machine. However, his 1892 patent was for an improved calculating machine with an added printer. William Seward Burroughs invented the first practical adding and listing machine - National Inventors Hall of Fame.
 
  


No comments:

Post a Comment