Tantalum carbide or tantalum-alloy carbide filament mounting and

Thermal field emission cathode

Thermal field emission electron gun

Thermion emitting oxide cathode and method for making the same

Thermionic cathode

Thermionic cathode

Thermionic cathode

Thermionic cathode and method of manufacturing same

Thermionic cathode apparatus

Thermionic cathode for electron tubes and method for the manufac

Thermionic cathode having an embedded grid, process for its fabr

Thermionic cathode heater

Thermionic cathode heater having reduced magnetic field

Thermionic cathode of high emissive power for an electric tube,

Thermionic cathode supporting device

Thermionic cathode using oxygen deficient and fully oxidized mat

Thermionic electron emitter

Thermionic electron emitter based upon the triple-junction...

Thermionic electron emitters

Thermionic electron emitters and methods of making them