Mary Van Brittan
Inventor of the Home Security System
African American nurse Mary Van Brittan Brown, devised an early security unit for her own home. She and her husband took out a patent for the system in the same year, and they were awarded the patent three years later, in 1969. Home security systems commonly used today took various elements from her design.
https://timeline.com/marie-van....-brittan-brown-b63b7
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