US PATENT SUBCLASS 315 / 203
.~.~ Discharge device or rectifier in the auxiliary starting electrode circuit

Current as of: June, 1999
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315 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS

200 R  DF  DISCHARGE DEVICE AND/OR RECTIFIER IN THE SUPPLY CIRCUIT {7}
202  DF  .~ Plural cathode and/or anode discharge device load {1}
203.~.~ Discharge device or rectifier in the auxiliary starting electrode circuit {1}
204  DF  .~.~.~> Discharge control discharge device in the auxiliary electrode circuit

DEFINITION

Classification: 315/203

(under subclass 202) Systems wherein the discharge device is provided with at least one principal anode and at least one principal cathode and an auxiliary discharge electrode, the discharge device and/or the rectifier being included in the circuit which supplies current or potential to the auxiliary electrode.

(1) Note. Where the system includes a plurality of discharge devices, one of which is connected in the control circuit of the discharge device which is the load in the circuit, the patent is classified as a plural load device system in the subclasses above where the discharge device in the control circuit is claimed as a discharge device whose operation depends upon gas or vapor ionization even though the system is claimed as only having one ultimate load device. Where the controlling discharge device is claimed merely as a discharge device even though it is disclosed as a gaseous ionization discharge device, the system is not considered to be a plural load device system for the purpose of classification.

SEE OR SEARCH THIS CLASS, SUBCLASS:

335, and indented subclass, and the subclasses referred to in the notes to the definition of these subclasses, for other systems provided with a discharge device load having an auxiliary discharge electrode.

352, and indented subclass, for other systems under the class definition provided with a discharge control discharge load and having an electric discharge device in the control circuit, where the discharge control device is other than an auxiliary starting electrode.