Pyrometers; instruments for temperature control in the nature of temperature controllers for electric arc furnaces; optical inspecting apparatus and instruments; light sensors for electric arc furnaces; electric monitoring control apparatus, namely, electric control devices for electric arc furnaces; technical thermometers; temperature monitors for industrial use; sensors for measuring light and temperature, not for medical use; flame monitors; apparatus and instruments for physics, namely, a...

Lenses for welding helmets; Protective goggles for welding; auto-darkening lenses for welding helmets; auto-darkening lenses for protective goggles for welding