Raymond Waibel Ketchledge (December 8, 1919 – October 23, 1987)[1][2] was an American engineer, known for his contributions to the first computerized telephone switching control systems.
Following this he directed the Indian Hill laboratories of Naperville, Illinois (1966–75), before returning to New Jersey where he oversaw the Ocean systems research division in Whippany, New Jersey, until his retirement. He held sixty patents in diverse areas, including thirty-one in switching systems.
raymond, ketchledge, raymond, waibel, ketchledge, december, 1919, october, 1987, american, engineer, known, contributions, first, computerized, telephone, switching, control, systems, biography, editborn, harrisburg, pennsylvania, ketchledge, married, lois, ja. Raymond Waibel Ketchledge December 8 1919 October 23 1987 1 2 was an American engineer known for his contributions to the first computerized telephone switching control systems Biography editBorn in Harrisburg Pennsylvania 3 Ketchledge married Lois Jane Quackenbush 4 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 systems and the L3 coaxial carrier for Transatlantic telephone cable systems 1946 54 before becoming the leader of the Switching systems development group 1956 This brought him fame due to the pioneering work on applying stored program architecture to telephone switching systems Ketchledge oversaw the installation project for the first 1ESS switch in Succasunna 1965 Following this he directed the Indian Hill laboratories of Naperville Illinois 1966 75 before returning to New Jersey where he oversaw the Ocean systems research division in Whippany New Jersey until his retirement He held sixty patents in diverse areas including thirty one in switching systems He died of cancer at his home in Englewood Florida on October 23 1987 Awards editNational Academy of Engineering inductee 1970 IEEE Alexander Graham Bell Medal 1976 with Amos E Joel Jr and William Keister IEEE Fellow New Jersey Inventors Hall of Fame inducteeReferences edit Amos E Joel Jr Raymond W Ketchledge 1919 1987 biography from IEEE Raymond Ketchledge 67 an Electronics inventor obituary from New York Times October 29 1987 Raymond W Ketchledge at Find a Grave AwardsPreceded by first IEEE Alexander Graham Bell Medal1976 Succeeded byEberhardt Rechtin Retrieved from https en wikipedia org w index php title Raymond W Ketchledge amp oldid 1134908910, wikipedia, wiki, book, books, library,
