US PATENT SUBCLASS 315 / 11
.~.~ With secondary emission stage in the cathode-ray 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}
10  DF  .~ With radiant energy sensitive control means {1}
11.~.~ With secondary emission stage in the cathode-ray tube {1}
11.5  DF  .~.~.~> Color convergence controlled by photodetector

DEFINITION

Classification: 315/11

(under subclass 10) Subject matter wherein the cathode-ray tube is provided with a secondary emissive electrode.

SEE OR SEARCH THIS CLASS, SUBCLASS:

12.1, for other cathode-ray tube systems wherein the cathode-ray tube is provided with a secondary emissive electrode.

SEE OR SEARCH CLASS

313, Electric Lamp and Discharge Devices,

379, for cathode-ray tube structures which are photosensitive and which have a secondary emissive electrode.