AMERICAN SCHOOL OF CORRESPONDENCE

1919





Authors and Collaborators

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KEMPSTER B. MILLER. M.E.
Consulting Engineer and Telephone Expert Of the Firm of McMeen and
Miller, Electrical Engineers and Patent Experts, Chicago
American Institute of Electrical Engineers
Western Society of Engineers

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GEORGE W. PATTERSON, S.B., Ph.D.
Head, Department of Electrical Engineering, University of Michigan

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CHARLES THOM
Chief of Quadruplex Department, Western Union Main Office, New York City

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