IPC Main Group
A63J 17/00 Apparatus for performing colour-music
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- HUMAN NECESSITIES
- Class:
- SPORTS; GAMES; AMUSEMENTS
- Subclass:
- DEVICES FOR THEATRES, CIRCUSES, OR THE LIKE; CONJURING APPLIANCES OR THE LIKE
Related Keywords
theatrical COLOUR(S) effects, e.g. for colour music