IPC Main Group
G09B 21/00 Teaching, or communicating with, the blind, deaf or mute
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- Subclass:
- EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
Related Keywords
communicating with BLIND PERSONSteaching BLIND PERSONSCOMMUNICATING with the blind, deaf or dumbcommunicating with DEAF persons
3 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- G09B 21/02 Devices for Braille writing
- G09B 21/04 Devices for conversing with the deaf-blind
- G09B 21/06 Devices for teaching lip-reading