This was done in some museums in the 50s but not to the extent and quality of Atlantic Technology. Back in the 90s I tried to reproduce the effect with a piezo tweeter and several generators, mixers and an FM modulator but with poor results, the amp overheated from the 100k carrier.
I’ve been watching this myself, even had stock in the company. Never heard it or saw a commercial product come out.
Thanks for the update.