DIFF Subgroup
F24H 3/06 the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
Introduced: September 1968
Full Title
Air heaters > with forced circulation > the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
CPC subdivides this area 3x more granularly than IPC with 3 additional codes.
3 codes are CPC-only extensions.
Child Classifications
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