Oskar Kozlovskis

Oskar Kozlovskis (September 30, 1893 - January 13, 1978) was a Latvian-born inventor who claimed his "power wing" was able to produce more energy than it required to operate, thus being a perpetual motion machine. Kozlovskis stated that he was unable to obtain a patent nor was he able to receive any kind of official recognition for his work, in spite of his nearly four decades of writing letters to sitting U.S. Presidents and government agencies.