Alexander Graham Bell invents the first crude metal detector.
Chester A. Arthur president of the USA 1881-1885. Chester A. Arthur, vice president under James Garfield, sworn in as president upon the death of Garfield.
David Houston patents the roll film for cameras.
Edward Leveaux patents the automatic player piano.
James Garfield president of the USA 1881. James Garfield wounded by assassin's bullet on 3 Jul 1881 and dies 19 Sep 1881.
2
1884
Charles Parson patents the steam turbine.
George Eastman patents paper-strip photographic film.
James Ritty invents the first working, mechanical cash register.
Lewis Edson Waterman invents the first practical fountain pen.