IPC Subgroup
H01J 13/56 Tubes having two or more main anodes
Introduced: September 1968
Last revised: January 2006
Full Title
Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes > Tubes having two or more main anodes
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
1 direct subcode
Child Classifications
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- H01J 13/58 with control by one or more intermediate control electrodes