US PATENT SUBCLASS 244 / 198
.~.~ With lift modification

Current as of: June, 1999
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244 /   HD   AERONAUTICS

34 R  DF  AIRCRAFT SUSTENTATION {2}
35 R  DF  .~ Sustaining airfoils {7}
198.~.~ With lift modification {3}
199  DF  .~.~.~> By vortex generator or dissipator
200  DF  .~.~.~> By characteristic of airfoil's skin
201  DF  .~.~.~> Variable {6}

DEFINITION

Classification: 244/198

(under subclass 35) An airfoil having means associated therewith for modifying a characteristic of the support created thereby.