Jovanovich renamed Helicopter Engineering Research Corp. Jovair Corporation 1957, developing tandem-rotor JOV-3 into Sedan 4E, and building prototype J-2. Both taken over by McCulloch 1969.
Jovanovich renamed Helicopter Engineering Research Corp. Jovair Corporation 1957, developing tandem-rotor JOV-3 into Sedan 4E, and building prototype J-2. Both taken over by McCulloch 1969.