Heater for an indirectly heated cathode

Heater for indirectly-heated cathode

Indirectly heated cathode for a gas discharge tube

Indirectly heated cathode with a thermal absorption layer on...

Indirectly heated dispenser metal capillary cathode for electric

Indirectly heated filamentary cathode

Indirectly-heated cathode device for electron tubes

Indirectly-heated cathode heater structure for a cathode ray tub

Industrial hollow cathode

Low mass, indirectly heated, fast warm-up heater-cathode assembl

Metal cathode and indirectly heated cathode assembly having...

Method of manufacturing a coil heater of an indirectly-heated ty

Rigid indented cylindrical cathode for X-ray tube

Thermionic electron emitter

Thermionic electron source

Uniform filament and method of making the same

Vacuum electron tube having an oxide cathode comprising chromium