Philip downing invented the mailbox
The horse race starting gate (first used in Canada)
Paul B Downing is the fake person who invented the mailbox .When Paul L. Downing really invented it.
what did Obama invent
Phillip Dowing Invented the mailbox.
Roberts helped to invent the microwave, but did not invent it by himself.
an electrical switch for railroads
what was Philip b downing death. and what year he died
yes
yes
Philip Emeagwali did not invent the computer
philip was drowning thank god he dident die
Boston, Massachusetts
September 3,1871
February 20 1850
oct. 24 , 2009
october 27,1891
submarine