John E. Karlin, the original creator of all-digit dialing as we know it today, passed away at the age of 94, The New York Times reports. He is credited with designing the keypad we now use every day ...
During a study of evolving telephone designs for our new book, my coauthor Russell A. Flinchum and I came across two of Pratt’s distinguished alumni who had connections to the Bell Telephone System.
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