Who invented Automobiles using gasoline?
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Who is often called the 'first African-American' inventor?
Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that?
Which object, initially called the 'Whirlwind', was invented by Ives McGaffey in 1869 ?
Atomic theory was devised by
Who invented the BALLPOINT PEN?
Who was the first person to patent the JET ENGINE?
Landstrom invented
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