Alkaline earth metal oxide cathode containing rare earth metal o
Apparatus for an electron gun employing a thermionic...
Back-gated field emission electron source
Barium-aluminum-scandate dispenser cathode
Bialkaline photocathode having increased spectral sensitivity an
Bonded grid-cathode electrode structure
Cathode and process for producing the same
Cathode arrangement
Cathode assembly having thermion emitter of cermet pallet
Cathode coating for thermionic arc discharge lamp cathodes
Cathode design
Cathode emissive body for an impregnated cathode of an...
Cathode for a gas discharge tube
Cathode for an electric discharge tube
Cathode for an electron gun
Cathode for an electron tube
Cathode for an electron tube
Cathode for cathode ray tube of directly heating type and proces
Cathode for electron gun and its manufacturing method
Cathode for electron tube