Black Fact = 1904 (March 29) – Granville T. Woods, along with his brother Lyates, patented the first of two improvements on Railroad Brakes on this date in 1904. Patent # 755,825.
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Black Fact =(1877) Garrett A. Morgan
Black Fact = 1877 (March 4) – Garrett A. Morgan, inventor of the gas mask and traffic light, was born in Kentucky on this date ...