Articles of glass for building purposes; Building glass; Building materials made of crystallized glass; Building materials made of glass fibres; Building materials of glass; Clear glass for building purposes; Covered walkways made entirely of glass; Covered walkways of glass and having a non-metallic frame; Doors made of glass for buildings; Fences made of laminated glass; Fire retarding glass for use in construction; Float glass for building; Folding walls of glass; Glass building materials; Glass doors; Glass in sheet form for use in doors; Glass in sheet form for use in windows; Glass louvres for doors; Glass panels for doors; Glass panels for windows; Glass walls; Glass windows; Glass-reinforced plastic doors; Glazing elements made from glass; Heat protective glass for building; Heat reflecting glass for building; Infrared reflective glass for use in building; Insulating glass (building); Insulating glass for building; Insulating glass for use in building; Planar glass for buildings; Planar glass for doors; Planar glass for wall partitions; Planar glass for walls; Sealed insulating glass units for building; Security glass for use in building; Sheet glass for use in building; Single layer coated safety glass for glazing buildings; Single layer coloured safety glass for glazing buildings; Single layer safety glass for buildings; Stained-glass windows; Windows made of laminated safety glass for buildings; Windows made principally of glass