Joseph W. Barron, 62, vice president of the Aerospace and Marine Systems Group of The Singer Company and a retired brigadier general in the Air Force Reserve, died at his home in Potomac Monday after a heart attack.

Gen. Barron's Air Force career began in World War II. He joined the Army Air Corps in 1941 and was commissioned after pilot training. For two years he served as copilot for the aircraft of Gen. George C. Marshall, the Army chief of staff, and from 1944 to 1946 he was the pilot for Secretary of State Edward R. Stettinius.

From 1946 to 1949, Gen. Barron commanded the 1100th Special Air Mission Group, and then became the U.S. air attache to Brazil. He received the Order of Merit from the Brazilian government for his work there and then began a series of staff jobs that dealt primarily with defense problems of the Western Hemisphere.

He left the active Air Force in 1954, but remained in the reserve. He was promoted to brigadier general in 1966 and retired in 1975.

Gen. Barron began his business career with the Westinghouse Company in Pittsburgh in the mid-1950s. In 1960, he joined the Singer Company, working first as a government sales manager in the Link Division in Binghamton, N.Y. In 1963 he was named vice president for administration and marketing and in 1967 he became vice president and general manager. Subsequent assignmens took him to New York City. He moved to the Washington area in 1974, when he was named vice president of government relations for Link.

In 1976, he was named vice president of government relations for Singer's Aerospace and Marine Systems Group, the position he held at his dealth.

Gen. Barron was born in Tremont, Pa. He graduated from the Drexel Institue of Technoloty with a degree in commerce and engineering in 1941.

He was a member of the Association of the U.S. Army, of the Wings Club, of the Aero Club of Washington, of the National Aeronautics Association and of the Night Fighters Association.

Survivors include his wife, Elizabeth MacEntee Barron, of the home in Potomac: and six daughters, Sister Mary Catherine Baron C.S.J., of Latham, N.Y., Elizabeth B. Ferretti of Ridgewood, N.J., Patricia B. Anthony of Okemos, Mich., Christine Marie Barron of Philadelphia, Jo Ann Elizabeth Barron of the home, and Francine Stephanie Barron also of the home; and two sisters, Mary B. Phillips of Largo, Fla., and Margaret B. Reddy of Castle Rock, Colo.

The Family suggests that expressions of sympathy be in the form of contributions to the Heart Fund.