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205:in 1920 and served as president of the
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249:National Academy of Sciences
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201:. Ryan was elected to the
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32:This article includes a
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329:Alexander Graham Bell
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317:William Stanley, Jr.
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365:Cummings C. Chesney
311:George Westinghouse
191:Stanford University
183:electrical engineer
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59:introducing
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292:1909–1925
234:Biography
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