11 Instruments and installations for lighting, heating, ventilation and water supply purposes as well as for sanitary purposes, namely, lighting installations for air vehicles; Lighting apparatus, namely, lighting installations; Lighting apparatus for vehicles; Lamps; Arc lamps; disinfectant apparatus for household and industrial purposes; Electric discharge tubes for lighting; Air filters for air conditioning units; Air filtering installations; Gas lamps; Lamp glasses; Electric light bulbs; Light bulbs; Lamp mantles; UV lamps for Air conditioning installations; UV lamps for Air conditioners for vehicles; laboratory lamps; Sockets for electric lights; Filaments for electric lamps; Germicidal lamps for purifying air; Ultraviolet ray lamps, not for medical purposes; Luminous tubes for lighting; Air purifying apparatus and machines; Water purifying installations for drinking water supply; Water purifying apparatus and machines; Sterilizers, not for medical purposes, namely, for sterilizing surfaces; Filters for drinking water; UV lamps for ventilation systems, air conditioning systems; UV lamps for water filtering apparatus; Fluorescent, UV and LED lamp tubes made from glassware, porcelain and earthenware; sanitizing apparatus using ultraviolet light for sanitizing air, water and surfaces, not for medical purposes