![]() The heater of the invention includes a housing having an air inlet, an air outlet and an interiorly concave contoured wall extending from a rear wall to a front wall, the interiorly concave contoured wall being formed to direct a flow of air from the air inlet to the air outlet. While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not disclose a new portable battery operated heater. with all apparatus for treatment installed in a common casing F24F1/02- Self-contained room units for air-conditioning, i.e.separate or self-contained units or units receiving primary air from a central station F24F1/00- Room units for air-conditioning, e.g.F24F- AIR-CONDITIONING AIR-HUMIDIFICATION VENTILATION USE OF AIR CURRENTS FOR SCREENING.with resistive elements, electrodes and fins being bonded together without additional element in-between for domestic or space-heating systems portable or mobile the heating medium being a resistive element Heating by direct contact, i.e. electric heating element using electric energy supply, e.g. F24H3/0417- Air heaters with forced circulation the air being in direct contact with the heating medium, e.g.with resistive elements, electrodes and fins being bonded together without additional element in-between for domestic or space-heating systems F24H3/0411- Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. ![]() ![]() with resistive elements, electrodes and fins being bonded together without additional element in-between ![]()
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