Gerald R. Conway, 84, the president of George A. Fuller Co. when he retired in 1979 after working there 46 years, including supervising the construction firm's work on Washington National Cathedral, died of cancer Nov. 29 at his home in Falls Church.

He joined Fuller as a field engineer and worked for the company until retiring, except for six months in 1972 with a Washington building company.

At Fuller, he became vice president in 1965, senior vice president overseeing the Washington and New York offices in 1972 and, by 1976, the executive vice president and chief operating officer in New York. After retiring, he spent five years as a consultant to the New York-based company's Washington office.

In addition to Washington National Cathedral, he oversaw the Twin Towers in Rosslyn, the Washington Civic Center, the Meadowlands Sports Complex in New Jersey and airstrips in Saudi Arabia.

Mr. Conway was a New York native and a 1938 civil engineering graduate of Yale University. He served in the Navy during World War II.

He was a past president of the Master Builders Association and had served as a director of the Washington Building Congress and the Construction Contractors Council.

He was a member of the American Society of Civil Engineers, the Yale Club of Washington, the Country Club of Fairfax and St. Anthony's Catholic Church in Falls Church. His hobbies included golf and landscape painting.

Survivors include his wife of 54 years, Laura C. Conway, of Falls Church; three sons, Richard G., of Springfield, John L., of Bedford, Mass., and Robert E., of Cincinnati; two daughters, Cathleen Conway Del Polito of Fairfax Station and Anna Conway Petelle of Northbrook, Ill.; and 13 grandchildren.