As far as I can tell these were invented and designed by an electrician who then set up the business to sell them and it appears that the business did not go well, as so many do, and has now folded. I assume from the way in which things operated that the owner had been let down by their distributor when they were expanding and also that the process of production had problems that then caused the business to stop. Presumably after a recovery period the remaining stock were then sold off and once these were gone, that was it.