IPC Subgroup
H01J 13/5 Tubes having a single main anode
Introduced: September 1968
Last revised: January 2006
Full Title
Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes > Tubes having a single main anode
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
2 direct subcodes
Child Classifications
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- H01J 13/52 with control by one or more intermediate control electrodes
- H01J 13/54 with control by igniter, e.g. single-anode ignitron