Apparatus for preventing filament shorting in a magnetron cathod

Arc discharge lamp with liquid metal and heating means

Dimmable high pressure arc lamp apparatus and methods

Discharge lamp

Field emission ion source having heated anode

Gas discharge display device with integral, co-planar, built-in

Gas discharge display with built-in heater

Gas discharge lamp temperature control

Gas display panel with internal heater

Gas-and/or vapor discharge lamp

High pressure metal vapor discharge lamp

High pressure sodium vapor lamp with improved color reproduction

Metal vapor segmented discharge tubes

Plasma compensation cathode

Plasma display having heater and method of making same

Quick warm-up cathode heater for high average power magnetrons

Radiation-emitting devices

Radiation-emitting devices

Radiation-emitting devices

Rotary anode x-ray tube