IPC Main Group
H01J 43/00 Secondary-emission tubes; Electron-multiplier tubes
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
Related Keywords
DYNODESPHOTO multipliersSECONDARY -emission tubes
2 direct subcodes
Child Classifications
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- H01J 43/02 Tubes in which one or a few electrodes are secondary-electron-emitting electrodes
- H01J 43/04 Electron multipliers