US PATENT SUBCLASS 313 / 468
.~.~.~ Rare earth

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}
467  DF  .~.~ Phosphor composition {2}
468.~.~.~ Rare earth

DEFINITION

Classification: 313/468

(under subclass 467) Subject matter wherein the phosphor composition is formed from a rare earth element.