US PATENT SUBCLASS 313 / 439
.~.~ Electrostatic

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}
439.~.~ Electrostatic

DEFINITION

Classification: 313/439

(under subclass 421) Subject matter wherein the deflecting means provides electrostatic attraction or repulsion of the cathode ray.

SEE OR SEARCH THIS CLASS, SUBCLASS:

432, for plural electrostatic deflection means.