Thanks to Hadiza Mohammed, creator of the Women Rock Science Tumblr, for calling attention to inventor Marie Van Brittan Brown. You can read about Brown on the African-American registry.
According to the registry, Brown invented Closed Circuit TV (CCTV) for home surveillance as a way to keep people safer. Her invention with her husband, patent, #3,482,037 was reported in the New York Times in 1969.
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Fantastic!