US PATENT SUBCLASS 313 / 300
.~.~.~ Three or more serially arranged


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

293  DF  DISCHARGING DEVICES WITH APERTURED ELECTRODE (E.G., GRID) INTERPOSED BETWEEN TWO ELECTRODES {6}
296  DF  .~ Plural interposed apertured electrodes {2}
297  DF  .~.~ Serially arranged {3}
300.~.~.~ Three or more serially arranged


DEFINITION

Classification: 313/300

(under subclass 297) Discharge devices having three or more apertured or grid-like electrodes interposed in superimposed relation with respect to each other in the inter-electrode space.

SEE OR SEARCH THIS CLASS, SUBCLASS:

447, for cathode-ray tubes which have three or more apertured or grid-like electrodes interposed between the cathode and target.

599, where the discharge device has an envelope containing an atmosphere of gas or vapor