Yes, and it was shopped around back in the 60's too; BT let some folks sample it, but they found it unsatisfying -- battery tech then was very far from what it has become; what they had then was really more like an "electric cigarette", not electronic. BP just plain wasn't interested in it. So it never went it anywhere. When Hon Lik re-invented it in the early 2000's, many things had changed -- electronics, batteries, and human knowledge of chemistry.
Andria