having one or more control electrodes

Full Title

Gas-filled discharge tubes with solid cathode (H01J25/00, H01J27/00, H01J31/00 - H01J41/00 take precedence; gas filled spark gaps H01T; Marx converters H02M7/26) > Cold-cathode tubes > with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes, voltage-indicator tubes, (cathode-glow lamps H01J61/04) > having one or more control electrodes

Child Classifications

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• H01J 17/46 for preventing and then permitting ignition but thereafter having no control