in ,

Western Electric successfully brought sound to….

Western Electric successfully brought sound to motion pictures

Western Electric successfully brought sound to motion pictures and introduced systems of mobile communications which culminated in the cellular telephone.

Leave a Reply

Your email address will not be published. Required fields are marked *

a jet plane

At a jet plane’s speed of 1,000 km…

Bell Telephone Laboratories

On December 23, 1947, Bell Telephone…