H01J17/492 - CPC Classification

Gas-filled discharge tubes with solid cathode; Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron; Display panels, e.g. with crossed electrodes, e.g. making use of direct current with crossed electrodes

• H01J17/494 » {using sequential transfer of the discharges, e.g. of the self-scan type } 0
• H01J17/497 » {for several colours} 2

Recent Application in this class: