US PATENT SUBCLASS 340 / 970
.~.~ Altitude

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

945  DF  AIRCRAFT ALARM OR INDICATING SYSTEMS {11}
963  DF  .~ Flight alarm {7}
970.~.~ Altitude

DEFINITION

Classification: 340/970

Altitude:

(under subclass 963) Subject matter having an alarm responsive to the distance from the aircraft to ground or sea level.