Raymond W. Ketchledge

Raymond Waibel Ketchledge (December 8, 1919 – October 23, 1987) was an American engineer, known for his contributions to the first computerized telephone switching control systems.

Born in Harrisburg, Pennsylvania, Ketchledge married Lois Jane Quackenbush. He earned a B.Sc. and M.Sc. (1942) in electrical engineering from the Massachusetts Institute of Technology before joining Bell Labs where he stayed for his whole professional career (1942–1982).
At Bell Labs he first worked on the Mark 24 FIDO Torpedo used in World War II, then took part in developing the first underwater repeater… More on Wikipedia →