. The Bell System technical journal . evelopment and switching re-search, and has worked on a number of projects, including the cardtranslator, the magnetic drum, the video transmission evaluator, andthe vibrating reed selector. He is currently engaged in the developmentof wire-spring relay. Member of Tau Beta Pi and Pi Tau Sigma. CONTRIBUTORS TO THIS ISSUE 215 Roger I. Wilkinson, in , 1924, Professional Engineer (hon-orary), 1950, Iowa State College, 1924; Northwestern liell TelephoneCompany, 1920-21; American Telephone and Telegraph Company, 1924-34; Bell Telephone Laboratories, 193
. The Bell System technical journal . evelopment and switching re-search, and has worked on a number of projects, including the cardtranslator, the magnetic drum, the video transmission evaluator, andthe vibrating reed selector. He is currently engaged in the developmentof wire-spring relay. Member of Tau Beta Pi and Pi Tau Sigma. CONTRIBUTORS TO THIS ISSUE 215 Roger I. Wilkinson, in , 1924, Professional Engineer (hon-orary), 1950, Iowa State College, 1924; Northwestern liell TelephoneCompany, 1920-21; American Telephone and Telegraph Company, 1924-34; Bell Telephone Laboratories, 1934-43 and 1946-. U. S. War Depart-ment, ^^ashingt()n and South Pacific, 1943-45. Mr. Wilkinson has beenengaged in applications of the mathematical theory of probability totelephone problems. IMedal for Merit, 1946. Member of ; ;Institute of Mathematical Statistics; American Society for Quality Con-trol; Associate Member of ; and Member of Eta Kappa Nu;Tau Beta Pi; Phi Kappa Phi; and Pi Mu Epsilon. PHE BELL SYSTEM.
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