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What else did Philip Downing invent besides the mailbox?

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Anonymous

∙ 14y ago
Updated: 9/17/2023

an electrical switch for railroads

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Wiki User

∙ 14y ago
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Related Questions

What did Philip downing invent?

Philip downing invented the mailbox


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october 27,1891


What did Philip b. downing invent?

The credit of inventing the protective public mailbox(letter-box) goes to the Philip B. Downing, who was from Boston, Massachusetts, had been awarded a U.S. patent(No.462,093) for animprovement to the street letter (mail) box on Oct. 27, 1891.http://www.briskinfo.com/inventions/who-invented-street-letter-drop-mailbox.html


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Philip Emeagwali did not invent the computer


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Philip emeagwali is fast with computers and even faster with the truth.


What did thomas Edison invent besides the light bulb?

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What sports did china invent besides soccer?

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