US PATENT SUBCLASS 340 / 945
AIRCRAFT ALARM OR INDICATING SYSTEMS

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

945AIRCRAFT ALARM OR INDICATING SYSTEMS {11}
946  DF  .~> Nonairplane (e.g., balloon or helicopter)
947  DF  .~> Land-based landing guidance {5}
958  DF  .~> Docking guidance
959  DF  .~> Takeoff indicator
960  DF  .~> Landing gear indicator
961  DF  .~> Potential collision with other aircraft
962  DF  .~> Icing indicator
963  DF  .~> Flight alarm {7}
971  DF  .~> Nonalarm flight indicator {7}
981  DF  .~> Aircraft beacons {1}
983  DF  .~> Obstruction beacon

DEFINITION

Classification: 340/945

AIRCRAFT ALARM OR INDICATING SYSTEMS:

(under the class definition) Subject matter having alarm devices or indicators in or used with aircraft.

SEE OR SEARCH THIS CLASS, SUBCLASS:

500+, for a system having only nominal aircraft structure and significant alarm structure. Significant limitations to the aircraft would necessitate classification in subclass 945.