- 1954Context
Brown v. Board of Education decided
The U.S. Supreme Court rules unanimously in Brown v. Board of Education of Topeka that racial segregation in public schools is unconstitutional. Thurgood Marshall argues the case for the NAACP Legal Defense Fund.
- 1988The Rise
Laserphaco Probe patent granted
The U.S. Patent Office grants Patricia Bath U.S. Patent 4,744,360 for the Laserphaco Probe. She is the first Black woman physician to hold a medical patent.
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Timeline data: 159 events across The Ledger. See the full 400-year timeline →