Bell has many other inventions (1 Jan 1881 Jahr – 31 Dez 1881 Jahr)
Beschreibung:
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.Zugefügt zum Band der Zeit:
Datum:
1 Jan 1881 Jahr
31 Dez 1881 Jahr
~ 12 months