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F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
F24H3/00—Air heaters
F24H3/02—Air heaters with forced circulation
F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
FR435845D1911-10-311911-10-31Perfectionnements aux appareils électriques à chauffer l'air
ExpiredFR435845A
(fr)