Hand's free telephone designed by John P. McDermott, No.231, 599. Patented August 24, 1880. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Science Source |
Bildgröße: | 3465 px × 3900 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |