H01J2893/0048 - CPC Classification

Discharge tubes and lamps Tubes with a main cathode

• H01J2893/0049 » Internal parts 0
• H01J2893/005 » Cathodes 1
• H01J2893/0051 » Anode assemblies; screens for influencing the discharge 1
• H01J2893/0055 » Movable screens 0
• H01J2893/0056 » Parts inside tubes brought to incandescence by the discharge 0
• H01J2893/0058 » Grids; Auxiliary internal or external electrodes 0