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H01J17/00—Gas-filled discharge tubes with solid cathode
H01J17/38—Cold-cathode tubes
H01J17/48—Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
H01J17/49—Display panels, e.g. with crossed electrodes, e.g. making use of direct current
H01J17/492—Display panels, e.g. with crossed electrodes, e.g. making use of direct current with crossed electrodes
H01J17/494—Display panels, e.g. with crossed electrodes, e.g. making use of direct current with crossed electrodes using sequential transfer of the discharges, e.g. of the self-scan type