Siddhesh Joshi (Editor)

Philip B. Downing

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Phillip Downing

Philip b downing


Philip B. Downing was an African American inventor from Boston, Massachusetts, best known for his patent on the modern day letter box.

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Philip B. Downing Black ThenLooking Black On Today In 1891 Phillip B Downing

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References

Philip B. Downing Wikipedia
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