Dispenser cathode for a grid-controlled electron tube and method

Dispenser cathode with emitting surface parallel to ion flow

Dispenser cathode with emitting surface parallel to ion flow and

Dispenser cathode with porous sintered compacted metal dispenser

Dispenser cathode, particularly a metal capillary cathode

Electric discharge tube or discharge lamp and scandate...

Electrode for a discharge lamp

Electrode for discharge lamp

Electrode for discharge light source

Electrode type glow discharge apparatus

Electron beam heated thermionic cathode

Electron emission element

Electron emission source composition for flat panel display...

Electron emission source composition for flat panel display...

Electron emission source, composition for forming electron...

Electron emitter device for data storage applications

Electron emitter device for data storage applications and...

Electron emitter including porous antimony

Electron emitting device and method of making the same

Electron gun