CPC Subgroup
H01J 29/48 Electron guns
Full Title
Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00 > Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement > Electron guns
8 direct subcodes
Child Classifications
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- H01J 29/50 two or more guns in a single vacuum space, e.g. for plural-ray tube (H01J29/51 takes precedence)
- H01J 29/51 Arrangements for controlling convergence of a plurality of beams