US PATENT SUBCLASS 313 / 377
.~.~.~.~ Secondary electron emissive

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

364  DF  CATHODE RAY TUBE {11}
365  DF  .~ Image pickup tube {6}
373  DF  .~.~ With photoemissive cathode {8}
376  DF  .~.~.~ With target {2}
377.~.~.~.~ Secondary electron emissive

DEFINITION

Classification: 313/377

(under subclass 376) Subject matter including means for providing electron multiplication at the target in response to the electron cloud from the photo-emissive cathode or means for providing electron multiplication of electrons returning from the target.

(1) Note. The means providing the electron multiplication at the target may be located between the photo-emissive cathode and the target or be part of the target.

SEE OR SEARCH THIS CLASS, SUBCLASS:

379, for an electron multiplier receiving electrons returning from the photo-emissive cathode.