Production year
1935
© Fonds historique / CNRS Images
Reference
19000001_0977
Démonstration d'une brosse métallique électrique, le 21 mai 1935. ONRSII
Démonstration d'une brosse métallique électrique, le 21 mai 1935. Office national des recherches scientifiques et industrielles et des inventions (ONRSII).
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