Calculator - Counting machine - Accounting machine
Counting - Calculating machines - Contex
IBM
Typewrtter - Calculating machine - Olympia
Calculator - DAP
Scryption - Writing
Post-it - 3M - Sticky notes - Sponsor 1988 Olympics
Calculator - Calculating machine - Addo
Typewriter - Drawing table - Amersfoort
Folding machine - Pitney Bowes
Photocopier - Gispert
Calculator - Calculating machines - Monroe
Olympia - Typewriter
Typewriter - Olivetti
Typewriter - Silent - L.C. Smith
Dictation machine
Hermes - Mercury - Carbon
Scissors - Clipping service
Glue pot - Gluton - Talens - Apeldoorn
