The French Nord 1601 aerodynamic research aircraft designed. The aircraft was designed to investigate the aerodynamics of swept wings and related high-lift devices.
USN
U.S. Navy Naval Aviation News June 1950 <a rel="nofollow" class="external autonumber" href="http://www.history.navy.mil/nan/backissues/1950s/1950/Jun50.pdf">[1]</a>, p. 24.