IPC Subgroup
F22B 13/1 with auxiliary water tubes inside the fire-box
Introduced: September 1968
Last revised: January 2006
Full Title
Steam boilers of fire-box type, i.e. boilers where both combustion chambers and subsequent flues or fire tubes are arranged within the boiler body > Locomobile, traction-engine, steam-roller, or locomotive boilers > with auxiliary water tubes inside the fire-box
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- STEAM GENERATION
- Subclass:
- METHODS OF STEAM GENERATION; STEAM BOILERS
1 direct subcode
Child Classifications
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- F22B 13/12 the auxiliary water tubes lining the fire-box