New name from middle/late 1950s of D. K. Jovanovitch's Helicopter Engineering and Research Corporation, continuing development of the little JOV-3 tandem-rotor helicopter. From 1949 this had been entrusted to Aircraft Division of McCulloch Motors Corporation, which developed a slightly larger model, the MC-4C. In February 1953 this became the first U.S. tandem-rotor helicopter to receive commercial certification. Jovair Corporation was formed some years later and took the design a stage further, resulting in the Sedan 4E (certificated 1963), of which limited production began in 1965. In June 1962 Jovair flew the prototype J-2 two-seat light autogyro; both programs were taken over 1969-1970 by McCulloch Aircraft Corporation.