IPC Subgroup
F21H 1/02 characterised by the material thereof
Introduced: September 1968
Last revised: January 2006
Full Title
Incandescent mantles; Selection of imbibition liquids therefor > characterised by the material thereof
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- LIGHTING
- Subclass:
- INCANDESCENT MANTLES; OTHER INCANDESCENT BODIES HEATED BY COMBUSTION