US PATENT SUBCLASS 348 / 786
.~.~.~.~ With screen or absorption filter

Current as of: June, 1999
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348 /   HD   TELEVISION

739  DF  VIDEO DISPLAY {13}
744  DF  .~ Projection device {7}
776  DF  .~.~ Cathode-ray tube image source {4}
781  DF  .~.~.~ With optical element {3}
786.~.~.~.~ With screen or absorption filter

DEFINITION

Classification: 348/786

With screen or absorption filter:

(under subclass 781) Subject matter wherein the optical structure has an element which limits the passage of light or blocks a particular wavelength.