313 / | HD | ELECTRIC LAMP AND DISCHARGE DEVICES |
238 | DF | WITH SUPPORT AND/OR SPACING STRUCTURE FOR ELECTRODE AND/OR SHIELD {9} |
243 | DF | .~ For plural electrodes of discharge device {3} |
244 | DF | .~.~ Envelope supports or forms electrode {5} |
249 | .~.~.~ Elongated envelope with electrodes spaced along length {2} | |
250 | DF | .~.~.~.~> With spacer between electrodes or electrode supports |
251 | DF | .~.~.~.~> Plural electrodes supported along the length of a wire, rod, or tube |