NISP

Optical glasses; optical lenses made of glass

Building glass; window glass for building; window sheets being glass panels for building construction purposes; sapphire glass for building; sheets made of glass for building or construction materials; sheets made of sapphire glass for building or construction materials; non-metallic building materials being building glass; glass panels and screens used in non-metallic windows for laser installations and industrial equipment use

Unworked or semi-worked glass, not for building; unworked or semi-worked glass, except building glass; unworked or semi-worked sapphire glass, not for building; worked glass, not for building; glass for use in optical lenses; worked sapphire glass, not for building; optical sapphire glass; sapphire glass for use in optical filters and optical lenses