Granville Woods

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Telegraph and Railway Device Developer.

George Alcorn

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Semiconductor and Aerospace Innovator.

James West

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Created the Affordable Electret Microphone.

Valerie Thomas

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Developed a 3-D Optical Illusion Device.

Lewis Temple

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Created the "Temple's Iron" Harpoon.

Richard Spikes

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Invented an Automatic Gear Shift.