US PATENT SUBCLASS 315 / 381
.~.~.~.~ Circuits control grid-cathode circuit of tube

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}
380  DF  .~.~.~ Control only at turn-on or turnoff of circuit {1}
381.~.~.~.~ Circuits control grid-cathode circuit of tube

DEFINITION

Classification: 315/381

(under subclass 380) Subject matter wherein the cathode-ray tube has a cathode or grid electrode and the circuitry for the control of the cathode-ray beam at the initiation or termination of the beam controls the beam through the grid or cathode of the cathode-ray tube.