IPC Main Group
F23C 9/00 Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- COMBUSTION APPARATUS; COMBUSTION PROCESSES
- Subclass:
- METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN AIR
Related Keywords
chemical or biological purification of smoke, etc.
2 direct subcodes
Child Classifications
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