having one or more control electrodes

Introduced: September 1968

Last revised: January 2006

Full Title

Gas-filled discharge tubes with solid cathodes > Cold-cathode tubes > with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes or voltage-indicator tubes > having one or more control electrodes

Classification Context

Section:: ELECTRICITY
Class:: ELECTRIC ELEMENTS
Subclass:: ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

1 direct subcode

Child Classifications

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