IPC Main Group
F24D 9/00 Central heating systems employing combinations of heat-transfer fluids covered by two or more of groups
Introduced: September 1968
Last revised: January 2022
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- HEATING; RANGES; VENTILATING
- Subclass:
- DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
1 direct subcode
Child Classifications
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- F24D 9/02 Hot water and steam systems