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Black history inventors are listed alphabetically: use the A to Z index bar to navigate and select or just browse the many listings. Each listing has the name of the black inventor followed by the patent number(s) which is the unique number assigned to an invention when a patent is issued, the date the patent was issued, and a description of the invention as written by the inventor. If available, links are provided to in-depth articles, biographies, illustrations and photos on each individual inventor or patent. How to
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Clifton M Ingram
- #1,526,215, 2/10/1925, Railroad crossing flag signal
- #1,542,776, 6/16/1925, Well drilling tool
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