Actually its supposed to be originally a german patent from 1982. this is only an english translation. I have not found the original patent (but it could be that they dont have patents from the 80s online in germany)
If you scroll down to the circular setup, it strangely reminds me of a tpu or a similar setup.
It runs on 50 herz AC, but there are no coil specifications, just that they should all be the same.
It seems to me that it is to good to be true... so I personnally think its a fake. Unless someone knows more about it. On the other hand, there is no money involved, its just sitting there doing nothing...