When he assumed ownership, the company, which was then located on Howard Street, was a small radio and TV supplier.
During his tenure, he moved the company from the era of vacuum tubes to solid-state circuitry. The firm grew to more than 50 employees and after leaving downtown Baltimore moved to Cromwell Bridge Road and subsequently to White Marsh.
In 2003 he sold the business, which is still in operation, family members said.
The former Rodgers Forge resident, who lived for many years in the Hampton neighborhood of Baltimore County, had lived since 2012 at the Mercy Ridge retirement community in Timonium.
Mr. Bagliani was an avid boater and fisherman, and after selling a second home in Annapolis, purchased one in Stuart, Fla., where he continued to boat and fish.
Mr. Bagliani was a communicant of Immaculate Conception Roman Catholic Church at Baltimore and Ware avenues in Towson, where a Mass of Christian burial will be offered at 11 a.m. Saturday.
He is survived by his wife of 62 years, the former Audrey Balentine; a son, Edward Bagliani of Roanoke, Va.; three daughters, Joanne B. Maenner of Towson, Mary B. Schaefer of Lutherville and Barbara B. Clary of Salem, Ohio.; a brother, William Bagliani of Raleigh, N.C.; a sister, Theresa Thyberg of Brooklandville; and 15 grandchildren. Another son, Jack Bagliani, died in 2002.