01/20/2004. Remarks by Johan Visschedijk: "Designed in 1917 by J.V. Martin as a high-altitude fighter, not completed before the end of WW I. Test flown as a civil light aircraft in 1919 at Dayton, Ohio, USA, it was unique in having "K-strutted" wings. The one-and-only K-III was donated to the Smithsonian Institution in 1924. Three examples of the larger K-IV, equipped with floats, were sold to the US Navy, BuNo. A5840-A5842."
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