I had two Vectrons at the Vacuum Cleaner Museum. I sold one to fellow Vac Collector, Greg Palmer. I still have the other one.
IONA made the Vectron to Dyson patents for Johnson Wax to sell commercially. They didn't hold up too well, which is why they were here and gone in two years.
IONA made them as household machines, calling them the Fantom and added the HEPA along the way.