By CLAUDIO E. CABRERA and JULIA JACOBS from NYT U.S. https://ift.tt/2GXSEdv
via Inventions and Patents, Blacks The New York Times https://ift.tt/2GXSEdv February 24, 2019 at 05:30AM
Seven Black Inventors Whose Patents Helped Shape American Life
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February 24, 2019
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