US PATENT SUBCLASS 313 / 289
.~.~.~.~ Ceramic or insulating support

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

238  DF  WITH SUPPORT AND/OR SPACING STRUCTURE FOR ELECTRODE AND/OR SHIELD {9}
283  DF  .~ Electrode supported by envelope {2}
284  DF  .~.~ Electrode supporting member supported by envelope {1}
285  DF  .~.~.~ Supporting wire, rod, or tube supported by envelope {5}
289.~.~.~.~ Ceramic or insulating support

DEFINITION

Classification: 313/289

(under subclass 285) Devices which have the supporting rod or tube formed of insulating or ceramic material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

256, for discharge devices which have a plurality of electrodes enclosed within an envelope, an insulating or ceramic electrode supporting rod being supported by the envelope.

275+, where the electrode supported is a filament.