Hedy Lamarr

Lamarr was born Hedwig Eva Maria Kiesler in 1914 in Vienna, the only child of Gertrud "Trude" Kiesler (née Lichtwitz) and Emil Kiesler.

Her father was born to a Galician-Jewish family in Lemberg in the Kingdom of Galicia and Lodomeria, part of the Austrian Empire (now Lviv in Ukraine) and was, in the 1920s, deputy director of Wiener Bankverein, and in the end of his life a director at the united Creditanstalt-Bankverein. Her mother, a pianist and a native of Budapest, had come from an upper-class Hungarian-Jewish family. She had converted to Catholicism and was described as a "practicing Christian" who raised her daughter as a Christian, although Hedy was not baptized at the time.: 8 

As a child, Lamarr showed an interest in acting and was fascinated by theater and film. At the age of 12, she won a beauty contest in Vienna. She also began to learn about technological inventions with her father, who would take her out on walks, explaining how devices functioned. Although Lamarr had no formal training and was primarily self-taught, she invested her spare time, including on set between takes, in designing and drafting inventions, which included an improved traffic stoplight and a tablet that would dissolve in water to create a flavored carbonated drink.

During the late 1930s, Lamarr attended arms deals with her then-husband, arms dealer Fritz Mandl, "possibly to improve his chances of making a sale". From the meetings, she learned that navies needed "a way to guide a torpedo as it raced through the water." Radio control had been proposed. However, an enemy might be able to jam such a torpedo's guidance system and set it off course.

When later discussing this with a new friend, composer and pianist George Antheil, her idea to prevent jamming by frequency hopping met Antheil's previous work in music. In that earlier work, Antheil attempted synchronizing note-hopping in the avant-garde piece written as a score for the film Ballet Mécanique (1923–24) that involved multiple synchronized player pianos. Antheil's idea in the piece was to synchronize the start time of identical player pianos with identical player piano rolls, so the pianos would play in time with one another. Together, they realized that radio frequencies could be changed similarly, using the same kind of mechanism, but miniaturized.

Based on the strength of the initial submission of their ideas to the National Inventors Council (NIC) in late December 1940, in early 1941 the NIC introduced Antheil to Samuel Stuart Mackeown, Professor of Electrical Engineering at Caltech, to consult on the electrical systems. Lamarr hired the legal firm of Lyon & Lyon to draft the application for the patent which was granted as U.S. patent 2,292,387 on August 11, 1942, under her legal name Hedy Kiesler Markey. The invention was proposed to the Navy, who rejected it on the basis that it would be too large to fit in a torpedo, and Lamarr and Antheil, shunned by the Navy, pursued their invention no further. It was suggested that Lamarr invest her time and attention to selling war bonds since she was a celebrity.