US PATENT SUBCLASS 244 / 180
.~.~.~ By change in altitude

Current as of: June, 1999
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244 /   HD   AERONAUTICS

75 R  DF  AIRCRAFT CONTROL {8}
76 R  DF  .~ Automatic {10}
175  DF  .~.~ Electric course control {10}
180.~.~.~ By change in altitude {2}
181  DF  .~.~.~.~> By change in pitch, angle of attack or flight path
182  DF  .~.~.~.~> By change in speed

DEFINITION

Classification: 244/180

(under subclass 175) System wherein the path of flight of the aircraft is altered from a first height to a second height above ground level.