H01J2229/5681 - CPC Classification

Details of cathode ray tubes or electron beam tubes; Correction of beam optics using supplementary correction devices magnetic

• H01J2229/5682 » Permanently magnetised materials, e.g. permanent magnets 6
• H01J2229/5684 » Magnetic materials, e.g. soft iron 2
• H01J2229/5687 » Auxiliary coils 3