US PATENT SUBCLASS 244 / 89
.~.~ Elevators both front and rear

Current as of: June, 1999
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244 /   HD   AERONAUTICS

75 R  DF  AIRCRAFT CONTROL {8}
87  DF  .~ Rudders and empennage {3}
89.~.~ Elevators both front and rear

DEFINITION

Classification: 244/89

(under subclass 87) Horizontal rudders arranged at both the front and the rear of aircraft.