11 Apparatus for lighting purposes, namely lighting fixtures, lighting tracks, arc lamps, lighting tubes, landscape lighting installations; apparatus heating purposes, namely electric heating fans, heating furnaces, hot-air space heating apparatus, hot-water space heating apparatus; apparatus for steam generating purposes, namely steam generators, steam valves, steam radiators for heating buildings; apparatus for cooking purposes, namely cook tops, cooking ranges, domestic and commercial cooking ovens, microwave cooking ovens; apparatus for refrigerating purposes, namely refrigerating machines, refrigerators; apparatus for drying purposes, namely clothes dryers, hair dryers, electric hot air hand dryers; apparatus for ventilating purposes, namely ventilating exhaust fans, ventilating fans for commercial and industrial use, ventilating louvers, ventilation hoods; apparatus for water supply and sanitary purposes, namely toilets, sinks, bath tubs, and pipes being parts of sanitary facilities; air-conditioning apparatus or installations; air purifiers; water purifying apparatus; sterilizers; ionization apparatus for the treatment of air; water ionizers; gas scrubbers; apparatus for treating humidity, namely, humidifiers and dehumidifiers