Who was Hedy Lamarr? Who was Mary Anderson? What did they invent that contributes to modern times?

Hollywood actress Hedy Lamarr, “the Angelina Jolie of her day,” was also an avid inventor and the person behind advances in communication technology in the 1940s that led to today's Wi-Fi, GPS, and Bluetooth.

Alabama native Mary Anderson (1866-1953) is credited with inventing the first operational windshield wiper. In her 1903 patent, she called her invention a window cleaning device for electric cars and other vehicles. ... Anderson left home in 1893 at age 27 to operate a cattle ranch and vineyard in Fresno, California.

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