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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
What else can I help you with?
Where did Philip b downing live?
Boston, Massachusetts
What did James b duke invent?
Tobacco
When did John B Curtis invent gum?
1848.
What year was Mary Downing Hahn born in?
Mary Downing Hahn was born in 1937.
Who was the first person to invent colonial weaving and when it was invented?
britan and amercan b/c they had to grown and make their own supplies to do the weaving
What did Philip downing invent?
Philip downing invented the mailbox
When Philip B Downing died?
what was Philip b downing death. and what year he died
Is Philip B Downing alive?
yes
What else did Philip Downing invent besides the mailbox?
an electrical switch for railroads
What is the birthday of Philip B. Downing?
September 3,1871
Where did Philip b downing live?
Boston, Massachusetts
When was Philip B Downing bron?
February 20 1850
When was Philip B. Downing born?
oct. 24 , 2009
How was Philip b downing educated?
Philip B. Downing was likely educated in public schools in the United States during the late 19th century when he was growing up. He may have also received further education in design and invention through apprenticeships or specialized courses.
Is Philip downing alive?
yes
Why was Philip b downing important?
He invented the street letter drop mail box with a door to keep the mail safe.
Why did Philip emeagwali invent the computer?
Philip Emeagwali did not invent the computer
