205038 ⎘
Details of cathode-ray tubes or of electron-beam tubes of the types covered by group; Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement; Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses for correcting aberration
Time-of-flight mass spectrometer and method for improving mass and spatial resolution of an image
#2Compact modular cathode
#3Method and apparatus for recirculation with control of synchrotron radiation
#4Deflection yoke for correcting misconvergence
#5Deflection yoke and color picture tube apparatus
#6Electron microscope