Inventos del siglo xx

1901

• King Camp Gillette invents the double-edged safety razor.
• The first radio receiver, successfully received a radio transmission.
• Hubert Booth invents a compact and modern vacuum cleaner.

1902

• Willis Carrier invents the air conditioner.
• The lie detector or polygraph machine is invented by James Mackenzie.
• The birth of the Teddy Bear.
• George Claude invented neonlight.

1903

• Edward Binney and Harold Smith co-invent crayons.
• Bottle-making machinery invented by Michael J. Owens.
• The Wright brothers invent the first gas motored and manned airplane.
• Mary Anderson invents windshield wipers.
• William Coolidge invents ductile tungsten used in lightbulbs.

1904

• Teabags invented by Thomas Suillivan.
• Benjamin Holt invents a tractor.
• JohnA Fleming invents a vacuum diode or Fleming valve.

1905

• Albert Einstein published the Theory of Relativity and made famous the equation, E = mc2.
• Mary Anderson receives a patent for windshield wipers.

1906

• William Kellogg invents Cornflakes.
• Lewis Nixon invents the first sonar like device.
• Lee Deforest invents electronic amplifying tube (triode).

1907

• Leo Baekelandinvents the first synthetic plastic called Bakelite.
• Color photography invented by Auguste and Louis Lumiere.
• The very first piloted helicopter was invented by Paul Cornu.

1908

• The gyrocompass invented by Elmer A. Sperry.
• Cellophane invented by Jacques E. Brandenberger.
• Model T first sold.
• J W Geiger and W Müller invent the geiger counter.
• Fritz Haber invents the HaberProcess for making artificial nitrates.[/liu]

1909

• Instant coffee invented by G. Washington.
1910

• Thomas Edison demonstrated the first talking motion picture.
• Georges Claude displayed the first neon lamp to the public on December 11, 1910, in Paris.

1911

• Charles Franklin Kettering invents the first automobile electrical ignition system.

1912

• Motorized movie camerasinvented, replaced hand-cranked cameras.
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• The first tank patented by Australian inventor De La Mole.
• Clarence Crane created Life Savers candy in 1912.

1913

• The crossword puzzle invented by Arthur Wynne.
• The Merck Chemical Company patented, what is now know as, ecstasy.
• Mary Phelps Jacob invents the bra.
• Gideon Sundback invented the modern zipper.

1914

• Garrett A.Morgan invents the Morgan gas mask.

1915

• Eugene Sullivan and William Taylor co-invented Pyrex in New York City.

1916

• Radio tuners invented, that received different stations.
• Stainless steel invented by Henry Brearly.

1917

• Gideon Sundback patented the modern zipper (not the first zipper).

1918

• The superheterodyne radio circuit invented by Edwin Howard Armstrong.Today, every radio or television set uses this invention.
• Charles Jung invented fortune cookies.

1919

• The pop-up toaster invented by Charles Strite.
• Short-wave radio invented.
• The flip-flop circuit invented.
• The arc welder invented.
1920

• The tommy gun patented by John T Thompson.
• The Band-Aid (pronounced 'ban-'dade) invented by Earle Dickson.

1921

• Artificial lifebegins -- the first robot built.
• John Larson invented the lie detector.

1922

• Insulin invented by Sir Frederick Grant Banting.
• The first 3-D movie (spectacles with one red and one green lens) is released.

1923

• Garrett A. Morgan invents a traffic signal.
• The television or iconoscope (cathode-ray tube) invented by Vladimir Kosma Zworykin.
• John Harwood invented theself-winding watch.
• Clarence Birdseye invents frozen food.

1924

• The dynamic loudspeaker invented by Rice and Kellogg.
• Notebooks with spiral bindings invented.

1925

• The mechanical television a precursor to the modern television, invented by John Logie Baird.

1926

• Robert H. Goddard invents liquid-fueled rockets.

1927

• Eduard Haas III invents PEZ candy.
• JWA Morrison...