Arc discharge lamp with a vertical thermal switch extending betw

Automatic shut-off device for an electric lamp

Ballast circuit for direct current arc lamp

Bimetal switch for electrode heat cutout within an electrically

Circuit breaker by-pass element

Discharge lamp having disconnect effective upon jacket failure

Discharge lamp having fuse-switch guard against jacket failure

Discharge lamp having mechanical disconnect guard against jacket

Discharge lamp having thermal switch starter

Discharge lamp starter and starting and operating circuitry

Discharge lamp starter and starting and operating circuitry

Discharge lamp with automatic shut off

Discharge lamp with bimetal starter

Electric-light bulb

Fail-safe switch which renders HID lamp inoperative upon breakag

Fluorescent lamp bimetal switch contact arrangement

Fluorescent lamp circuit breaker

Fluorescent lamp circuit breaker with low contact resistance

Fluorescent lamp with cathode heat switches

Gas and/or vapor discharge lamp