Granville T. Woods — The Black Inventor Who held over 50 patents and Powered the Railway
"Granville T. Woods held over 50 patents and did far more than revolutionize railway safety communication — he invented the device that gave streetcars the name "trolley," patented the power pickup system that became the basis of the third rail still used in subways today, and beat Thomas Edison in court twice. Yet most people have never heard his name." (from the YouTube video description)
https://www.youtube.com/shorts/Yw5PBHQ-NPk
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