Air humidifiers; Air humidifying apparatus; Air humidifying installations; De-humidifiers; Electric humidifiers; Humidifiers; Humidifiers (other than for medical use); Humidifying apparatus, other than for medical use; Installations for de-humidifying; Humidifiers for central heating radiators; Room humidifiers that contain water and are placed on central heating radiators; Humidifying machines, other than for medical use; Installations for humidifying; Room humidifiers (apparatus); Air dehumidifiers; Dehumidifiers; Linear air diffusers; Perfume diffusers (electric), other than parts of vacuum cleaners; Supply air diffusers; Porous ceramic articles for the diffusion of gases; Diffusers being parts of lighting apparatus; Diffusers being parts of lighting installations; Plastic louvres being diffusers for lighting apparatus; Apparatus for lighting; Apparatus for lighting buildings; Bulkhead lights; Bulbs for lighting; Ceiling light fittings; Christmas lights, other than candles; Casings for lights; Decorative gas lighting installations for use in patios; Decorative electric lighting installations for use in patios; Decorative gas lighting installations for use in gardens; Dome lights; Display lighting; Diving lights; Electric lighting installations; Electric light bulbs; Electric lighting apparatus; Emergency lights; Electrical lighting fixtures for use in hazardous locations; Emergency lighting installations; Full spectrum light sources; Flange light fittings; Fluorescent lights; Glow sticks for lighting; Garden lights; Garden lighting; Installations for outdoor lighting; Installations for lighting Christmas trees; Installations for lighting; Installations for lighting for use in television; Installations for lighting for use in cinematography; Light fittings; Light bulbs for gas-discharge lamps; Light bulbs, electric; Light diffusers; Lighting apparatus for architecture