Significant Inventions and Discoveries

Invention / Discovery	Credited to	Country	Year
Air Brake	George Westinghouse	United States	1868
Air Conditioning	Willis Carrier	United States	1911
Aircraft Autopilot	Elmer A. Sperry	United States	1910
Aqualung	Jacques-Yves Cousteau and Emile Gagnan	France	1943
Aspirin	Dr. Felix Hoffman	Germany	1899
Bacteria	Anton van Leeuwenhoek	The Netherlands	1683
Barbed Wire	Joseph E. Glidden	United States	1873
Barometer	Evangelista Torricelli	Italy	1643
Circulation of Blood	William Harvey	England	1628
Fountain Pen	Lewis E. Waterman	United States	1884
Frozen Food	Clarence Birdseye	United States	1924
Gyrocompass	Elmer Sperry	United States	1905
Gyroscope	Jean Leon Foucault	France	1852
Halley's Comet	Edmund Halley	England	1705
Liquid Fueled Rocket	Robert Goddard	United States	1926
Measles Vaccine	John Enders and Thomas Peebles	United States	1953
Microphone	Charles Wheatstone	England	1827
Microwave Oven	Percy Spencer	United States	1947
Military Tank	Sir Ernest Swinton	England	1914
Motion Pictures	Thomas A. Edison	United States	1893
Proton	Ernest Rutherford	England	1919
Prozac	Bryan B. Malloy of Scotland and Klaus K. Schmiegel	United States	1972
Psychoanalysis	Sigmund Freud	Austria	1904
Pulsars	Antony Hewish and Jocelyn Bell Burnel	England	1967
Seismograph	John Milne	England	1880
Sewing Machine	Elias Howe	United States	1846
Spruce Based Chewing Gum	John Curtis	United States	1848
Stethoscope	Rene Laennec	France	1819
Surgery Antiseptic	Joseph Lister	England	1867
Teflon	DuPont	United States	1943
The Bicycle	Karl D. von Sauerbronn	Germany	1816
The Big Bang Theory	George LeMaitre	Belgium	1927
Xerography	Chester Carlson	United States	1938
Zipper	W.L. Judson	United States	1891