204460 ⎘
Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps; Main electrodes; Solid thermionic cathodes; Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment Heaters
RADIOTHERAPY DEVICE AND MICROWAVE SOURCE THEREOF
#2EMITTER AND DEVICE COMPRISING SAME
#3RADIOTHERAPY DEVICE AND MICROWAVE SOURCE THEREOF
#4Radiotherapy device and microwave source thereof
#5Electron source
#6Electron source
#7Field emission electron source, method for manufacturing same, and electron beam device
#8Thermionic emission device, focus head, x-ray tube and x-ray radiator
#9Ion source for multiple charged species
#10Hall-effect motor in which the temperature of the cathode-heating device is controlled
#11Tungsten wire, cathode heater and vibration service lamp filament
#12Thermionic emission device
#13CATHODE HEATER
#14TUNGSTEN WIRE, CATHODE HEATER AND VIBRATION SERVICE LAMP FILAMENT
#15Cathode ray tube
#16Cathode ray tube and method for manufacturing the same
#17Heaters for hollow cathodes
#18Multi-apertured conduction heater
#19High-brightness lanthanum hexaboride cathode and method for manufacturing of cathode