The frequency-hopping idea of this actress born Hedwig Kleiser in 1914 was used in a radio-controlled torpedo patent
... Lamarr contributed the idea of frequency hopping, while Antheil... [DOC] [TLE] With George Antheil, Hedy Lamarr co-invented a technique for ... [PAR] ... technique for spread spectrum communications and frequency hopping, 
initially intended for wartime use to make radio-guided torpedoes difficult for 
enemies... [DOC] [TLE] Jeanne Crain.