[Main Page]

Rechnerlexikon

Die große Enzyklopädie des mechanischen Rechnens

34.204.168.209 | Log in | Help

  DE  EN  FR  IT 
Main Page
All pages
Recent changes

Printable version
Discuss article

article
image
patent



Special pages
Pfeil.gif Patents  Pfeil.gif USA  Pfeil.gif 1857

Patente aus den USA 1857


  • Patent:US18675 24.11.1857 Orlando L. Castle, Upper Alton, Ill. : Arithmometer for Addition
  • Patent:US18692 24.11.1857 Thomas Hill : Arithmometer
  • Patent:US18711 24.11.1857 James D. Smith, Brantingham, N.Y. : Calculating Device


According to copyright you are allowed to cite verbatim from rechnerlexikon.de when giving the reference.