Archive for February 7th, 2011

Day 7 Thomas Stewart – 28 days of Black History in Technology

Thomas Stewart patented a new type of mop, but that’s not why he is listed as Day 7 Black History in Technology.  He is listed because he co-patented an improved station and street indicator in 1883. It was used with railways and street cars to signal what road or street the vehicles were crossing. Their […]

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