Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F24
HEATING; RANGES; VENTILATING
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F24F
AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
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5/00
Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00; , e.g. using solar heat or combined with household units such as an oven or water heater
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F24F5/0046
using natural energy, e.g. solar energy, energy from the ground
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F24F2005/0067
with photovoltaic panels
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