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Philip Downing
Philip Downing Philip Downing


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n 1891, anyone interested in mailing a letter would have to make the long trip to the post office. Philip Downing designed a metal box with four legs which he patented on October 27, 1891. He called his device a street letter box and it is the predecessor of today's mailbox. One year earlier, Downing patented an electrical switch for railroads which allowed railroad workers to supply or shut off power to trains at appropriate times. Based on this design, innovators would later create electrical switches such as light switches used in the home.


 
Philip Downing
Source: http://www.blackinventor.com/pages/philip-downing.html.
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Great Inventors: Phillip B Downing
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Introducing: Philip Downing, TIGI Artistic Director
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HÁRVÖRUR.IS | Hársýning TIGI Pro » Viðtal við Philip Downing frá TIGI
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10 Things That Wouldnt Exist Without Black Americans Response
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Behind the Scenes at Cloud 10 Beauty Event with Caroline Hirons, Sinead Cady & Philip Downing
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Phibian Haberdasher - The Frenzied & The Diligent
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TIGI Ambassadors Programme explained #bedheadbackstage
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Bellatones - All Out To Sea
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Things You Wouldn’t Have If Black People Didn’t Invent Them
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Crocodylus legotimus
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How Birds Evolved
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birdTree
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Its Alright - The Frenzied And The Diligent
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Flat Out Madness
This one's for you, Guy.
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The National Organization for the Professional Advancement of Black Chemists and Chemical Engineers
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