Air-conditioning apparatus and installations; Air-conditioning installations; Air cooling apparatus; Air filtering installations; Air purifying apparatus and machines; Electric air deodorizing apparatus; Electric air driers; Filters for air conditioning; Gas burners; Gas water heater for bathtub consisting of circulation pump with thermostat to fill, re-heat water and keep water warm; Germicidal lamps for purifying air; Hot plates; Humidifiers for household purposes; Ultraviolet ray lamps, no...