If it sounds too good to be true, it probably is: https://investorshub.advfn.com/boards/read_msg.aspx?message_...

Edit: more context: the “inventor” is Frank Pringle who appears to have invented a number of too-good-to-be-true gizmos, including one for weight loss.

Edit 2: also he claimed to cure cancer with microwaves (the same year as the oil producing microwaves): https://www.biospace.com/article/releases/-b-global-resource...