De Forest
[di fawr-ist, for-]
- Lee,1873–1961, U.S. inventor of radio, telegraphic, and telephonic equipment.
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Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
De Forest
- Lee. 1873–1961, US inventor of telegraphic, telephonic, and radio equipment: patented the first triode valve (1907)
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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