US PATENT SUBCLASS 244 / 903
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Current as of: June, 1999
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244 /   HD   AERONAUTICS

900  DF  LIGHTWEIGHT, WINGED, AIR VEHICLE (E,G,. ULTRALIGHT or HANG GLIDER) {4}
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DEFINITION

Classification: 244/903

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(under subclass 900) Subject matter wherein the very low weight air vehicle includes its own propulsion means.