11 Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes, namely, heating elements, steam generating installations, ventilating exhaust fans, hot water heaters, and sanitary installations in the nature of steam rooms; air-conditioning, cooling, ventilating and heating devices for land, air and water vehicles, namely, air conditioners for vehicles, air cooling and ventilation apparatus and instruments, heating installations; water heaters and portable electric heaters for land, air, and water vehicles; windscreen defrosters for vehicles, electric water heaters and engine preheating equipment, namely, electric heating fans, electrical heating cables; auxiliary air conditioners for land, air and water vehicles; electric warmers, namely, electric bed warmers, electric foot warmers; auxiliary heaters for land, air and water vehicles, namely, electric heaters for commercial use, portable electric heaters; roof air-conditioning installations, HVAC units for land, air and water vehicles; humidifiers, dehumidifiers, steam generating installations; apparatus for lighting, namely, lighting installations; hot air filters for domestic use; air conditioners, valves for air conditioners, evaporators for air conditioners; refrigerating machines and installations, drying apparatus for use in refrigeration systems; heat exchanges, not being parts of machines, and parts and fittings therefor; instantaneous water heaters; gas burners, oxyhydrogen burners; microwave ovens; gas stoves, electric stoves; refrigerating cabinets; freezers; range hoods for caravans and water vehicles; water purification installations; heat accumulators; valves for vehicle air conditioners; hot air blowers