US PATENT SUBCLASS 351 / 243
.~.~.~ Illuminated

Current as of: June, 1999
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351 /   HD   OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING

200  DF  EYE EXAMINING OR TESTING INSTRUMENT {7}
222  DF  .~ Subjective type {7}
239  DF  .~.~ Including test chart or target {5}
243.~.~.~ Illuminated

DEFINITION

Classification: 351/243

Illuminated:

(under subclass 239) Subject matter including structure for illuminating the chart or target, or for backlighting perforated or translucent symbols.

SEE OR SEARCH THIS CLASS, SUBCLASS:

237, for target image projection.

SEE OR SEARCH CLASS

40, Card, Picture, or Sign Exhibiting,

541, for illuminated signs.

362, Illumination, appropriate subclasses for light combined with structure generally and for projectors.