At 12, Robert D. "Bob" Fuller built his own radio transmitter and went on air with classical music and weather reports from his bedroom in Baudette, Minn.
He grew up to be an inventor who produced industrial motion pictures and other creative products for some of the nation's biggest corporations.
Fuller, of Mendota Heights, died of cancer March 30 at age 85.
"He was a pioneer in the audiovisual and motion picture industry in Minneapolis," said son Donn Fuller, who worked with his dad for years, watching him design and make equipment to run multiple slide projectors and sync images with music.
"He always liked to immerse people, take them out of their comfort zone and show them something new," said another son, Jim Fuller.
Among Bob Fuller's inventions were inflatable plastic domes in which multiple images and sounds flooded viewers. Dayton-Hudson and other corporations used the mobile chambers nationwide decades ago to convey corporate philosophy to staff.
"It was Bob's genius in coming up with these rooms and putting these shows together that would make them work," said his former business partner, Cy DeCosse of Minneapolis. "He was an electronic genius."
Bob Fuller, who held several patents, was "before his time" with inventions predating computers, IMAX and more, DeCosse said.