US PATENT SUBCLASS 347 / 121
.~.~.~ Electron beam generator with air tight envelope

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


347 /   HD   INCREMENTAL PRINTING OF SYMBOLIC INFORMATION

111  DF  ELECTRIC MARKING APPARATUS OR PROCESSES {3}
112  DF  .~ Electrostatic {8}
120  DF  .~.~ By information carrying flow of invisible charged particles {3}
121.~.~.~ Electron beam generator with air tight envelope {1}
122  DF  .~.~.~.~> Including latent image generation using luminescent material

DEFINITION

Classification: 347/121

Electron beam generator with air tight envelope:

(under subclass 120) Subject matter comprising means for modulating a beam of electrons in a vacuum (e.g., CRT) onto a faceplate, or the medium, to either directly, or indirectly, charge, or discharge, the medium in an imagewise manner.

SEE OR SEARCH THIS CLASS, SUBCLASS:

226+, for a radiation marking apparatus using a CRT.

SEE OR SEARCH CLASS

313, Electric Lamp and Discharge Devices,

364+, for a CRT, per se.