[Class : 11] Apparatus For Heating, Drying And Ventilation; Fans; (Parts Of Air Conditioning Installations); Fans; (Air Conditioning); Electric Fans For Personal Use; Parts And Components For Fans And Ventilating Apparatus Including Silencers, Grids, Butterfly Dampers And Multi Leaf Dampers, Fire Valves, Inflow And Outflow Apertures, Cloth Covered Apertures, Air Curtains, Ventilation Ducts, Ventilation Units, Ventilation Hoods; Air Supply Units; Speed Regulators For Fans; Duct Heaters; Air Supply And Extractor Devices; Extractor Hoods For Kitchens; Thermostatic Valves (Parts For Heating Installations); Level Control Valves For Tanks Included In Class 11.[Class : 35] Customer Information Concerning The Selling Of Individual Items Of Property; Retail Services Included In Class 35.[Class : 42] Research And Development (For Others) Included In Class 42.