Safety switch which renders high intensity discharge lamp inoper

Screw-in fluorescent lamp

Screw-in fluorescent lamp with magnetic arc spreading

Screw-in type lighting unit having a convoluted tridimensional f

Sealed beam lamps

Self ballasted lamp for automotive, aircraft runway, etc. lighti

Self ballasted lamp including a fuseable device

Self contained gas discharge device

Self grounding lamp for special use in an underwater environment

Self-ballasted electrodeless discharge lamp and...

Self-ballasted fluorescent lamp

Self-ballasted fluorescent lamp

Self-ballasted fluorescent lamp and luminaire

Self-ballasted glow discharge lamp having indirectly-heated cath

Self-ballasted screw-in fluorescent lamp

Self-ballasted screw-in fluorescent lamp

Semiconductor light source using a heat sink with a...

Semiconductor memory device

Semiconductor multipactor device

Semiconductor secondary emission cathode and tube