Suchen
Lee de forest
01
United States electrical engineer who in 1907 patented the first triode vacuum tube, which made it possible to detect and amplify radio waves (1873-1961)
Beispiel
Nahegelegene Wörter
App Herunterladen
Download Mobile App
Suchen
United States electrical engineer who in 1907 patented the first triode vacuum tube, which made it possible to detect and amplify radio waves (1873-1961)