US PATENT SUBCLASS 340 / 981
.~ Aircraft beacons


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

945  DF  AIRCRAFT ALARM OR INDICATING SYSTEMS {11}
981.~ Aircraft beacons {1}
982  DF  .~.~> Lights communicate (e.g., direction, altitude, reference position to observer)


DEFINITION

Classification: 340/981

Aircraft beacons:

(under subclass 945) Subject matter having beacons on-board the aircraft perceptible by an observer remote from the aircraft.

SEE OR SEARCH CLASS

362, Illumination,

470+, for aircraft light structure.