Production year
1935
© Fonds historique/colorisée pour Armand Colin/CNRS Images
19000001_0153
Dispositif de repérage aérien (mai 1935). Ce dispositif visait à détecter les avions en approche. Sa mise au point coïncide avec le rétablissement de la Luftwaffe en Allemagne en 1935. Office national des recherches scientifiques et industrielles et des inventions.
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1935
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