IPC Subgroup
H01J 29/48 Electron guns
Introduced: September 1968
Last revised: January 2006
Full Title
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 > Electron guns
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
2 direct subcodes
Child Classifications
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- H01J 29/5 two or more guns being arranged in a single vacuum space, e.g. for plural-ray tubes
- H01J 29/51 Arrangements for controlling convergence of a plurality of beams