US PATENT SUBCLASS 313 / 399
.~ Secondary emissive electrode

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

364  DF  CATHODE RAY TUBE {11}
399.~ Secondary emissive electrode {2}
400  DF  .~.~> With display
401  DF  .~.~> Monoscope

DEFINITION

Classification: 313/399

(under subclass 364) Subject matter which includes a

secondary emissive electrode.

(1) Note. Included here are electron multipliers.

SEE OR SEARCH THIS CLASS, SUBCLASS:

346, and the classes and subclasses specified in the notes thereto for secondary emissive electrodes, per se.

377, 379 and 387, for secondary emissive electrodes in pick-up tubes.

391, for storage tubes which may include a secondary emissive electrode. SEE OR SEARCH CLASS

315, Electric Lamp and Discharge Devices: Systems,

11, 12.1, for systems for supplying electrical energy to cathode-ray tubes which include a secondary emissive electrode.

329, Demodulators, appropriate subclasses, for demodulators with secondary emission.

330, Amplifiers,

42, for amplifiers having a secondary emissive tube.