US PATENT SUBCLASS 244 / 39
.~.~ Rotatable

Current as of: June, 1999
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244 /   HD   AERONAUTICS

34 R  DF  AIRCRAFT SUSTENTATION {2}
35 R  DF  .~ Sustaining airfoils {7}
39.~.~ Rotatable

DEFINITION

Classification: 244/39

(under subclass 35) Sustaining airfoils rotatable or capable of being moved in a rotary path with respect to the aircraft.

(1) Note. For arrangements of autorotating airfoils on aircraft, including hub structure for permitting autorotation, see this class, subclasses 17.11+.