CPC Subgroup Additional Only
H01J 2893/0065 Electrode systems
Full Title
Discharge tubes and lamps > Tubes with cold main electrodes (including cold cathodes) > Electrode systems
3 direct subcodes
Child Classifications
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- H01J 2893/0066 Construction, material, support, protection and temperature regulation of electrodes; Electrode cups
- H01J 2893/0067 Electrode assembly without control electrodes, e.g. including a screen
- H01J 2893/0068 electrode assembly with control electrodes, e.g. including a screen