Marie Van Brittan Brown Erfand die Heimsicherheit
Marie Van Brittan Brown Invented Home Security
Marie Van Brittan Brown war eine Krankenschwester in Queens, New York, die sich zu Hause unsicher fühlte. Sie baute ein System mit Kameras, Gucklöchern und einem Panikknopf, das zum Vorläufer der heutigen smarten Türklingeln wurde.
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Marie Van Brittan Brown Invented Home Security
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women inventors
home security
Black women innovators
patents
smart home
safety
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