Article incorporating a high temperature ceramic composite...

Cathode for an electron source and a method of producing the sam

Cathode structure for magnetron

Coil filament

Compact incandescent coiled coil filament

Composite vacuum evaporation coil

Concave conical foil-filament lamp

Direct-heated cathode structure

Directly heated cathode for electron tube

Directly heated cathode for electron tube

Directly heated cathodes

Directly heated meshed cathode for electronic tubes and method o

Directly-heated cathode structure

Directly-heated cathodes

Double layer electrode coil for a HID lamp and method of...

Electric incandescent lamp

Electrode coil for discharge lamps and method for producing such

Electron beam emitter

Electron beam emitter

Electron emitting filaments for electron discharge devices