IPC Subgroup
F25D 3/1 using liquefied gases, e.g. liquid air
Introduced: September 1968
Last revised: January 2006
Full Title
Devices using other cold materials; Devices using cold-storage bodies > using liquefied gases, e.g. liquid air
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
- Subclass:
- REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
1 direct subcode
Child Classifications
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- F25D 3/11 with conveyors carrying articles to be cooled through the cooling space