IPC Subgroup
F24F 8/9 Cleaning of purification apparatus
Introduced: January 2021
Full Title
Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying > Cleaning of purification apparatus
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- HEATING; RANGES; VENTILATING
- Subclass:
- AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING