Who is often called the 'first African-American' inventor?
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Who Invented Worldwide Standard Time Zones ?
What furniture item was invented by California furniture designer Charles Prior Hall in 1968?
Who invented the BALLPOINT PEN?
What drink was invented by Charles Leiper Grigg in 1929?
Who was the first person to patent the JET ENGINE?
FROZEN FOOD – Who discovered the first practical method of freezing food?
Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that?
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