(under subclass 581) Subject matter wherein there is a starting electrode on the outside of the envelope, the start electrode when electrically energized along with the electrodes within the envelope of the gas or vapor tube, causes the gas or vapor to ionize to form the discharge current in the envelope.
SEE OR SEARCH THIS CLASS, SUBCLASS:
166, for a liquid electrode discharge device having a starting band or external electrode.
595+, for gas or vapor three electrode discharge device with an internal start or control electrode in the discharge path.
601+, for three electrode gas or vapor discharge device where a start electrode is not in main discharge path.
607, for a gas or vapor discharge device having an electrode on the outside of the envelope.
