Refrigerating apparatus for lighting, heating, steam production, cooking, drying, ventilating, water supply and washroom facilities; refrigerating apparatus and installations; refrigeration machines and chambers; cold rooms, namely, refrigerating chambers; refrigerated systems for food and beverage preservation; drying apparatus and installations; temperature-controlled systems for preserving food and beverages; automatic temperature regulators (thermostatic valves) for refrigeration systems; fans for ventilation systems; cooling devices; cooling installations for liquids; refrigerant-fluid condensers; gas condensers other than parts of machines; heat exchangers (except parts of machines); air coolers; air evaporators; air humidifiers; extractors in general (terms too vague in the opinion of the International Bureau - Rule 13(2)(b) of the Regulations); air conditioners; evaporators; cooling evaporators; evaporators for air conditioners; evaporators with submerged combustion; steam generators