timers for view-glass lamps; time-regulators for view-glass lamps; [ glass sensors; ] closed circuit video camera systems comprising transmitters, transmission lines and monitors; view-glass fixtures, view-glass plates and view-glass safety guards, as parts of laboratory equipment

LIGHTING VIEWING INSPECTION WINDOWS FOR PROTECTIVE VIEWING OF INTERNAL CONDITIONS IN ENCLOSURES, FOR EXAMPLE BOILERS AND FURNACES

Colored sheet glass for building; Decorative glass for building

Luminous signs