US PATENT SUBCLASS 313 / 408
.~.~ With screen

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

364  DF  CATHODE RAY TUBE {11}
402  DF  .~ Shadow mask, support or shield {4}
408.~.~ With screen

DEFINITION

Classification: 313/408

(under subclass 402) Subject matter including a phosphor screen.