[Class : 11] Apparatus And Installations For Heating, Steam Generating, Refrigerating, Drying And Ventilating Purposes; Installations And Apparatus For Generating Steam; Steam Accumulators And Valves; Heat Exchangers, Not Being Parts Of Machines; Air Humidifiers; Air Dehumidifiers; Heat Generators; Heat Pumps And Accumulators; Heating Boilers; Heating Installations And Ele...