Alexander Graham Bell (1847-1922), Scottish-born American inventor, 1883. Bell patented the telephone in 1876. Here he is in the lecture hall of Boston University, communicating by means of his second telephone to a colleague in the basement. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Heritage Images / Ann Ronan Picture Library |
Bildgröße: | 2667 px × 3938 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |