De Forest

[di fawr-ist, for-]

noun

1. Lee, 1873–1961, U.S. inventor of radio, telegraphic, and telephonic equipment.

De Forest

/ də ˈfɒrɪst /

noun

1. Lee. 1873–1961, US inventor of telegraphic, telephonic, and radio equipment: patented the first triode valve (1907)