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Who Invented That? Part II

Supplemental to the Quizmaster's inventor quiz.
Same caveat as the Quizmaster's, many were invented by several people. Who got credit for it or made it work effectively
Some are discoveries or theories rather than inventions
Year is in some cases approximate
Quiz by QuizFace
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Last updated: February 28, 2018
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First submittedJanuary 31, 2018
Times taken10
Average score40.9%
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Invention
Year (circa)
Inventor
Screw for lifting water
200 BCE
Archimedes
Printing Press
1439
Johannes Gutenberg
Bifocal glasses
1750
Benjamin Franklin
Hot Air Balloon (manned)
1783
Joseph-Michel and Jacques-Etienne Montgolfier
Submarine (combat victory)
1863
Horace Lawson Hunley
Air Brakes
1868
George Westinghouse
Phonograph
1877
Thomas Alva Edison
Petrol Automobile
1885
Karl Benz
X-Rays
1895
Wilhelm Roentgen
Liquid-Fueled Rocket
1926
Dr. Robert H. Goddard
Penicillin
1928
Alexander Fleming
Helicopter (practical)
1939
Igor Sikorsky
Hook and Loop (Velcro)
1941
George de Mestral
A-4 / V-2 Rocket
1942
Werner von Braun
Nuclear Reactor
1942
Enrico Fermi
Aqua-Lung
1943
Jacques Cousteau
Atomic Bomb (project lead)
1945
J. Robert Oppenheimer
AK-47
1946
Mikhail Kalashnikov
AR-10, AR-15, AR-18
1960
Eugene Stoner
Kevlar
1965
Stephanie Kwolek
DMC-12
1981
John DeLorean
World Wide Web
1989
Tim Berners-Lee
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