US PATENT SUBCLASS 315 / 382
.~.~.~ With focusing of ray

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

1  DF  CATHODE RAY TUBE CIRCUITS {11}
364  DF  .~ Cathode-ray deflections circuits {16}
379  DF  .~.~ With additional control of cathode ray {3}
382.~.~.~ With focusing of ray {1}
382.1  DF  .~.~.~.~> For television

DEFINITION

Classification: 315/382

(under subclass 379) Subject matter wherein the circuitry associated with the cathode-ray tube for control of the cathode-ray beam, when present, comprises circuitry for concentration or diffusing the cathode-ray beam to produce a desired cathode-ray beam cross sectional shape and sharpness.

SEE OR SEARCH THIS CLASS, SUBCLASS:

14+, for cathode-ray tube circuits with a plurality of cathode-ray beam concentrating stages.

31, for cathode-ray tube circuits including circuitry for focusing or concentrating the cathode-ray beam.

SEE OR SEARCH CLASS

250, Radiant Energy,

311, for electron microscopes with means for focusing the electron beam on a target specimen, and 396+ for devices or systems with charged particle beam focusing. 313, Electric Lamp and Discharge Devices,

414, 442, and 452+ for cathode-ray tubes which include means for focusing a cathode-ray beam on the target of the cathode-ray tube.