DIFF Subgroup
F24H 3/04 the air being in direct contact with the heating medium, e.g. electric heating element
Introduced: September 1968
Full Title
Air heaters > with forced circulation > the air being in direct contact with the heating medium, e.g. electric heating element
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.
Child Classifications
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