CPC Subgroup Additional Only
H01J 2893/0048 Tubes with a main cathode
Full Title
Discharge tubes and lamps > Tubes with a main cathode
6 direct subcodes
Child Classifications
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- H01J 2893/0049 Internal parts
- H01J 2893/005 Cathodes
- H01J 2893/0051 Anode assemblies; screens for influencing the discharge
- H01J 2893/0055 Movable screens
- H01J 2893/0056 Parts inside tubes brought to incandescence by the discharge
- H01J 2893/0058 Grids; Auxiliary internal or external electrodes