Category:Dufaux 4

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Deutsch: Die Dufaux 4 ist ein einsitziges Flugzeug der französisch-schweizerischen Luftfahrtpioniere Henri und Armand Dufaux.
English: The Dufaux 4 was an experimental aircraft built in Switzerland in 1909 and which was originally constructed as an un-named biplane, the third aircraft constructed by the brothers Armand and Henri Dufaux.