Air purifying apparatus; ionization apparatus for the treatment of air; air sanitizing apparatus, namely, electric air sanitizing unit; air filtering installations; air filtering installations for purifying the ambient air in buildings; ventilating fans for industrial purposes; electrically powered ventilating fans for industrial purposes; suction ventilators, namely, ventilators for air suction for commercial and industrial use; roof fans; electric room air fans; ventilation apparatus, namel...

Air conditioning apparatus and installations; ventilation apparatus, namely, air exchangers and air mixers for equal heat distribution, cleaning and purifying air

Air conditioning apparatus and installations; ventilation apparatus, namely, air exchangers and air mixers for equal heat distribution, cleaning and purifying air