ruled that Meyer, who had high blood pressure, died of a cerebral aneurysm. Some of Meyer's supporters believe that he was assassinated to suppress his inventions. Philippe Vandemoortele, one of the Belgian investors, stated that he had been supporting Meyer financially for several years and considered him a personal friend, and that he has no clue from where the rumours came. Aftermath Meyer's patents have expired. His inventions are now in the public domain, available for all to use without restriction or royalty payment. No engine or vehicle manufacturer has incorporated Meyer's work. See also Free energy suppression conspiracy theory History of perpetual motion machines References External links Stanley Meyer biography from waterpoweredcar.com Fuel for fraud or vice versa? (On Stanley Meyer) — summary of the article in New Energy News. Meyer's rebuttal letter to New Energy News. Water-fuelled cars American inventions Free energy conspiracy theories Conspiracy theories in the United States Fraud in the United States United States district court cases 1998 controversies Discovery and invention controversies