(under subclass 137) Systems in which the load device is a discharge device having two or more cathodes and/or two or more cathodes and/or two or more anodes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
145, for this subject matter where the system includes a transformer in the supply circuit of the load device.
260, and indented subclasses, for other systems under the class definition wherein a plural cathode and/or anode load device is supplied with alternating current.
334, and indented subclasses, and the subclasses specified in the notes to the definition of those subclasses, for other plural cathode and/or anode load device systems.