Search examples: Microsoft | 2015 | 2014/10 | 4.12 | 04/20 | 05/26/1980 | Galileo Galilei
  1. Home
  2. Events
  3. Detail of event

Optical fiber is first used...

event · 22 April 1977 · 47 years ago

Optical fiber is first used to carry live telephone traffic.

More events on 22 Apr

© 2016 OnThisDay.net All rights reserved.
Loaded in 0.003s.