US PATENT SUBCLASS 313 / 410
.~.~ With character forming electrode

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

364  DF  CATHODE RAY TUBE {11}
409  DF  .~ Plural beam generating or control {7}
410.~.~ With character forming electrode

DEFINITION

Classification: 313/410

(under subclass 409) Subject matter including means to define a pattern in the form of a number or letter.