US PATENT SUBCLASS 340 / 815.66
.~.~ By light signal

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

815.4  DF  VISUAL INDICATION {18}
815.65  DF  .~ Multiple colors {1}
815.66.~.~ By light signal {2}
815.67  DF  .~.~.~> Plural
815.68  DF  .~.~.~> With movable optical means

DEFINITION

Classification: 340/815.66

By light signal:

(under subclass 815.65) Subject matter in which the indication is produced by light rays emitted from a light source.

SEE OR SEARCH CLASS

40, Card, Picture, or Sign Exhibiting,

581, for a colored light illuminated sign and subclass 444 for selective or intermittent illumination with colored light.