mar 7, 1876 - Telephone
Description:
Alexander Graham Bell, scientist, inventor and innovator, received the first patent for an “apparatus for transmitting vocal or other sounds telegraphically,” a device he called the telephone. A system for transmitting voices over a distance using wire or radio, by converting acoustic vibrations to electrical signals.Added to timeline:
Date:
mar 7, 1876
Now
~ 149 years ago