Bell has many other inventions (1 gen 1881 anni – 31 dic 1881 anni)
Descrizione:
Bell invents the phonograph, the metal detector, a metal jacket that helped people breathe, and an audiometer that helped detect hearing problems among 18 patents given in his name. He received many honors and many awards are still given today in his name.Aggiunto al nastro di tempo:
Data:
1 gen 1881 anni
31 dic 1881 anni
~ 12 months