Silver Screen actress Hedy Lamarr (born 1914) enjoyed one of the more memorable careers in Hollywood. Her name still ranks among the brightest lights in the history of movies. But what many people may not know is that she helped the Allies win World War II. On June 10, 1941, Lamarr and composer George Antheil received Patent No. 2,292,387 for their invention of a classified communication system that was especially useful for submarines. The system was a stroke of genius. It was based on radio frequencies changed at irregular periods that were synchronized between the transmitter and receiver.