US PATENT SUBCLASS 340 / 981
.~ Aircraft beacons
Current as of:
June, 1999
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340 /
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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.