Joseph Raes

Joseph Raes was a Belgian-American machinist who was reported to have invented a perpetual motion motor, in addition to various monoplane and submarine designs, including a telescopic mast for wireless, the latter being a subject of apparent interest by the U.S. Navy.

U.S. Government Documentation

 * Joseph Raes in the Bureau of Investigation's Old German Files: https://www.fold3.com/browse/1/hhqJwp03TQBwCAyoDjlJdm9JL