US PATENT SUBCLASS 313 / 463
.~.~ Electroluminescent

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

364  DF  CATHODE RAY TUBE {11}
461  DF  .~ Screen {10}
463.~.~ Electroluminescent

DEFINITION

Classification: 313/463

(under subclass 461) Subject matter wherein the light output of the screen capable of luminescence in an electric field is modified by a cathode ray.