US PATENT SUBCLASS 340 / 956
.~.~.~.~ Modulated light source


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

945  DF  AIRCRAFT ALARM OR INDICATING SYSTEMS {11}
947  DF  .~ Land-based landing guidance {5}
952  DF  .~.~ Particular energy guide source (e.g., sound, electric field, radio) {2}
953  DF  .~.~.~ Visual source {3}
956.~.~.~.~ Modulated light source


DEFINITION

Classification: 340/956

Modulated light source:

(under subclass 953) Subject matter having means to vary the amplitude or frequency or phase of flashing of the light other than a mere change in color.

SEE OR SEARCH THIS CLASS, SUBCLASS:

953, through 955, for flashing of lights in merely an on/off

nature without unique communications.

SEE OR SEARCH CLASS

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

109+, for optical communication.