CPC Subgroup
H01J 13/06 Cathodes
Full Title
Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes > Details > Main electrodes; Auxiliary anodes > Cathodes
4 direct subcodes
Child Classifications
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- H01J 13/08 characterised by the material
- H01J 13/10 Containers for the liquid pool; Arrangements or mounting thereof
- H01J 13/12 Positioning or moving the cathode spot on the surface of the pool
- H01J 13/14 Cooling, heating, circulating, filtering, or controlling level of the liquid