US PATENT SUBCLASS 348 / 817
.~.~.~.~ Electrochromic device

Current as of: June, 1999
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348 /   HD   TELEVISION

739  DF  VIDEO DISPLAY {13}
805  DF  .~ Cathode-ray tube {5}
808  DF  .~.~ Color TV {3}
816  DF  .~.~.~ With color specific optical device {1}
817.~.~.~.~ Electrochromic device

DEFINITION

Classification: 348/817

Electrochromic device:

(under subclass 816) Subject matter wherein the cathode-ray tube display surface is supplied with a device that changes color when positively or negatively charged.

SEE OR SEARCH CLASS

345, Computer Graphics Processing, Operator Interface Processing, and Selective Visual Display Systems,

49, and 105 having electrochromic light-controlling display elements.

359, Optics: Systems (Including Communication) and Elements,

265, for optical modulator using electrochromic element.