US PATENT SUBCLASS 434 / 48
.~.~ Aircraft sound simulation

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}
48.~.~ Aircraft sound simulation

DEFINITION

Classification: 434/48

Aircraft sound simulation:

(under subclass 30) Subject matter including an imitation of noise made by an aircraft.