1940s August 11, 1942 Actress Hedy Lamarr secure a patent for a frequency hopping spread spectrum communication system. The technology became the basis for wireless communication August 11, 1942
1940s January 4, 1943 Doris Kearns Goodwin American biographer, historian, and political commentator is born. January 4, 1943
1940s April 20, 1941 Grace Coddington Welsh model and Creative Director of Vogue Magazine is born. April 20, 1941
