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Hedy Lamarr

U.S. Patent Number 2,292,387 granted on August 11, 1942, to Hedy Keisler Markey aka Hedy Lamarr and George Antheil for a "Secret Communications System."
 
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Hedy Lamarr - Military Communications System
On June 10, 1941, Hedy 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.
Great Inventors Hedy Lamarr
1940's film goddess Hedy Lamarr was responsible for pioneering spread spectrum.
Hedy Lamarr (1913-2000)
Born Hedwig Eva Maria Kiesler in Vienna about half a year before the outbreak of the First World War, Hedy Lamarr would play an interesting non-film role as inventor in the Second. 
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Women Inventors
By Mary Bellis

Silver Screen superstar Hedy Lamarr (born Hedwig Kiesler Markey) with the help of composer George Antheil invented a secret communication system in an effort to help the allies defeat the Germans in World War II. The invention, patented in 1941, manipulated radio frequencies between transmission and reception to develop an unbreakable code so that top-secret messages could not be intercepted. The technology called spread spectrum, now takes on many forms.  However, all the spread spectrum that we use today directly or indirectly, flows from the invention created by 
Hedy Lamarr.

Hedy Lamarr was truely a movie star and an inventor.

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