19 Glass slabs, namely, building materials in the nature of concrete-based slabs made using recycled glass; glass slabs for use in building; figured plate glass for building; structural elements of glass for building; glazing elements made from glass, namely, non-metal window; glass elements for building panels, namely, glass panels for building construction purposes; building materials of glass, namely, glass for building; glass mosaics for use in building construction; double-glazed window panels, not of metal; non-metal window frame panels for construction; glass panels for building construction purposes; cladding panels made of glass for construction and building; glass panels for doors; glass panels for building construction; building materials, namely, glass walls; glass tiles, not for roofing; glass doors; glazed doors, not of metal; transparent doors of glass for buildings; fences made of laminated glass; stained-glass windows; building glass; decorative glass for building; fire retarding glass for use in construction; glass in sheet form for use in doors; insulating glass for building; laminated flat glass for building; enamelled glass, for building; tempered glass for building; thermal insulating glass for use in building; curtain walls, not of metal