George Morrison on the left, manager of the General Electric Works, and Thomas Alva Edison with Dr. Irving Langmuir, examining vacuum tube in research laboratory 1922.
George Morrison on the left, manager of the General Electric Works, and Thomas Alva Edison with Dr. Irving Langmuir, examining vacuum tube in research laboratory 1922.
Crédit: Album / TopFoto
Autorisations: ? Autorisation de modèle: Non - ? Autorisation de propriété: Non Questions sur les droits?
Taille de l'image: 3163 × 3634 px | 32.9 MB
Taille d'impression: 26.8 × 30.8 cm | 1245.3 × 1430.7 in (300 dpi)