IPC Subgroup
F23H 1/04 having a variable burning surface
Introduced: September 1968
Last revised: January 2006
Full Title
Grates with solid bars > having a variable burning surface
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- COMBUSTION APPARATUS; COMBUSTION PROCESSES
- Subclass:
- GRATES; CLEANING OR RAKING GRATES