Electron tube cathode

Electron tube cathode

Electron tube including a cathode having an electron emissive ma

Electron tube with cylindrical grid of pyrolytic graphite

Electron tube with cylindrical hexagonal grid aligned with rhomb

Electron tube with dispenser cathode

Electron tube with pyrolytic graphite heating element

Electron tube with support for pyrolytic graphite electrode

Electron-beam cathode having a uniform emission pattern

Electron-emitting device and electron-beam generator making use

Electronic element

Electronic switching devices

Electronic tube with cylindrical electrodes

Electronic tubes

Electronic valves

Emissive coating for electrodes

Emissive filament and support structure

Emitter

Emitter material for cathode ray tube having at least one...

Energy converter and light source