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Today in Black History: Mark Dean

Born in Jefferson City, Tennessee, in 1957, computer scientist and engineer Mark Dean helped develop a number of landmark technologies for IBM, including the color PC monitor and the first gigahertz chip. He holds three of the company’s original nine patents. He also invented the Industry Standard Architecture system bus with engineer Dennis Moeller, allowing

 
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Today in Black History: Patricia Bath

Doctor Patricia Bath, an ophthalmologist from New York, was living in Los Angeles when she received her first patent, becoming the first African American female doctor to patent a medical invention. Patricia Bath’s patent (#4,744,360) was for a method for removing cataract lenses that transformed eye surgery by using a laser device making the procedure

 
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Today in Black History: David Crosthwait, Jr.

Born in Nashville, Tennessee, on May 27, 1898, David Nelson Crosthwaite Jr. studied mechanical engineering at Purdue University before taking a job with the C.A. Dunham Company (now Dunham-Bush, Inc.). At Dunham, Crosthwait conducted innovative research, and designed the heat system for Rockefeller Center and Radio City Music Hall. He held 119 patents—39 in the

 
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