[Main Page]

Rechnerlexikon

Die große Enzyklopädie des mechanischen Rechnens

18.206.187.81 | Log in | Help

  DE  EN  FR  IT 
Main Page
All pages
Recent changes

Printable version

article
image
patent

Special pages

patent

Search results for: Addo Limited


 
  • Patent:GB1132204 30.10.1968 Clark, Asby James Leslie (P) Addo Limited (P) : An ancillary device to extend the scope and range of application of calculators used to teach simple arithmetic
  • Patent:GB979150 01.01.1965 Clark, John Arnold (P) Addo Limited (P) : An improved calculator for teaching simple arithmetic

Create Patent:
Country:    Number: 
Patentsearch:
Country:  Year: from to
Search for: