204833 ⎘
Details of vacuum tubes of the types covered by group One or more circuit elements structurally associated with the tube
Sub-classes:THz vacuum electronic devices with micro-fabricated electromagnetic circuits
#2Vacuum tube rear device
#3Microelectromechanical light emitter component, light emitter component and method for producing a microelectromechanical light emitter component
#4Spark gap device and method of measurement of X-ray tube vacuum pressure
#5Variable field emission device
#6Fluorescent display tube with touch switch and method of forming electrode and wiring of same
#7Variable field emission device
#8Triode tube emulator circuit