ORLY, FRANCE - 10 AOUT : Etienne Oehmichen presente son helicostat a l'aeroport d'Orly a un representant du Ministere de l'Air le 10 aout 1931 a Orly, France.
ORLY, FRANCE - August 10: Etienne Oehmichen presented its helicostat has Orly airport has a representative of the Air Ministry on 10 August 1931 a Orly, France. .
ORLY, FRANCE - August 10: Etienne Oehmichen presents its helicostat has Orly airport to a representative of the Ministry of Air August 10, 1931 has Orly, France.
ORLY, FRANCE - August 10: Etienne Oehmichen presented its helicostat has the Orly airport has a representative of the Department of the Air the august 10, 1931 has Orly, France.