(Died: April 19, 1961)
Lester Jennings Hendershot (1898-1961), born in West Elizabeth, Pennsylvania, was the inventor of the so-called Fuelless Motor (1928). In the 1920's Lester Hendershot was working on a new type of aviation compass. He stumbled across a method of generating energy. His "Hendershot magnetic motor" drew attention of the press and attracted big name investors as Charles Lindbergh. He got into political trouble promoting his device and consequently tried to take his business to Mexico. He is reported to have accepted an offer he couldn't refuse being paid never to work on his device again.
In 1961 Dr. Ed Skilling, from Columbia University, successfully built and tested a Hendershot free energy device, out of which he got 300 watts. Skilling had been associated with Hendershot and learned of the device through him. The generator was self-resonant at 500 kHz. - PESWiki
His son Mark M. Hendershot wrote what he knew about the Hendershot motor in his book, From the Archives of Lester J. Hendershot.