Production year
1925
© Fonds historique / CNRS Images
19000001_0591
Appareil automatique de télégraphie rapide, système Antranikian, photographié le 31 décembre 1925. Office national des recherches scientifiques et industrielles et des inventions. Ce relais rapide à circuit magnétique ouvert et noyau creux fut réalisé avec la collaboration des services techniques des P.T.T. qui vérifièrent son bon fonctionnement.
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1925
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