Cold cathode indicator device with memory electrode

Claim 1

A CATHODE GLOW INDICATOR TUBE INCLUDING AN ELONGATED CONTAINING A GASEOUS ATMOSPHERE CAPABLE OF SUSTAINING A GLOW DISCHARGE CONTIGUOUS A CATHODE SURFACE, A PLURALITY OF ELECTRODE GROUPS WITHIN SAID ENVELOPE EACH INCLUDING A CATHODE ELECTRODE, A PLURALITY OF FIRST ANODE ELECTRODES, AND AN AUXILIARY ANODE ELECTRODE, THE FIRST ANODE ELECTRODES OF EACH SUCH GROUP BEING DISPOSED EQUIDISTANTLY FROM THE CATHODE ASSOCIATED WITH SUCH GROUP, EACH AUXILIARY ANODE BEING DISPOSED FARTHER FROM THE ASSOCIATED CATHODE THAN THE FIRST ANODE ELECTRODES, AND A PLURALITY OF ELECTRICAL CONDUCTORS WITHIN SAID ENVELOPE EACH CONNECTING TOGETHER A PLURALITY OF THE ANODE ELECTRODES ASSOCIATED WITH DIFFERENT ONES OF SAID CATHODES TO FORM A PLURALITY OF DISTINCT ELECTRICAL SELECTION CIRCUITS EACH ADAPTED TO ENERGIZE A SELECTED COMBINATION OF SAID CATHODES TO EXHIBIT A VISIBLE CHARACTER.