US PATENT SUBCLASS 313 / 428
.~.~.~.~ With convergence

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

364  DF  CATHODE RAY TUBE {11}
421  DF  .~ Beam deflecting means {7}
426  DF  .~.~ Plural {2}
427  DF  .~.~.~ Three or more {3}
428.~.~.~.~ With convergence

DEFINITION

Classification: 313/428

(under subclass 427) Subject matter including means for causing plural beams to intersect at a specified point.