On this day in Black history February 27:– In 1872 Charlotte E. Ray graduated from Howard University Law School maki…
Posts Tagged: patent
On this day in Black history: Malcolm X assassination, electric resistor patent and more
On this day in Black history February 21:– In 1961 inventor Otis Boykin patented the electric resistor which en…
On this day in Black history: First Black United States sheriff, blimp patent and more
On this day in Black history February 20:
— In 1874 the Texas Senate confirmed the election of Walter Moses Bur…
On this day in Black history: Egg beater patent, first Black Harvard Law Review president and more
On this day in Black history February 5:
— In 1884 Willis Johnson patented his mechanical egg beater. The invent…