Yes it has. It hasn’t broken energy breakeven but fusion is definitely happening in that plasma and, for that matter, plasmas at lower temperatures, lower densities and with lower confinement times. Getting particles to fuse is pretty trivial.
He was an inventor of a variety of television technology, and I believe the designs were very similar to his fusor. Unfortunately, the design cannot be made "exothermic" IIRC, and the research ruined him financially.
