US PATENT SUBCLASS 434 / 33
.~.~ Helicopter

Current as of: June, 1999
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434 /   HD   EDUCATION AND DEMONSTRATION

29  DF  VEHICLE OPERATOR INSTRUCTION OR TESTING {4}
30  DF  .~ Flight vehicle {14}
33.~.~ Helicopter

DEFINITION

Classification: 434/33

Helicopter:

(under subclass 30) Subject matter wherein the conveyance is supported by blades rotating in a substantially horizontal plane and located above its passenger-carrying fuselage or framework.