Dates for inventions are often controversial. Inventions are often invented by several inventors around the same time, or may be invented in an impractical form many years before another inventor improves the invention into a practical form. Where there is ambiguity, the date of the first working version of the invention is used here. 

1930: Neoprene: Wallace Carothers

1930: Nylon: Wallace Carothers

1930: Photography: Underwater Motion Picture Camera: Arthur C. Pillsbury

1931: the Radio telescope: Karl Jansky Grote Reber

1931: Iconoscope: Vladimir Zworykin

1932: Polaroid glass: Edwin H. Land

1935: microwave radar: Robert Watson-Watt

1935: Trampoline: George Nissen and Larry Griswold

1935: Spectrophotometer: Arthur C. Hardy

1935: Casein fiber: Earl Whittier Stephen

1935: Hammond Organ: Laurens Hammond

1936: Pinsetter (bowling): Gottfried Schmidt

1937: Turboprop engine: György Jendrassik

1937: Jet engine: Frank Whittle and Hans von Ohain

1937: O-ring: Niels Christensen

1938: Ballpoint pen: Laszlo Biro

1938: Fiberglass: Russell Games Slayter John H. Thomas

1939: FM radio: Edwin H. Armstrong

1939: Helicopter: Igor Sikorsky

1939: View-master: William Gruber

1939: Automated teller machine: Luther George Simjian  

Comments (2)

Warrant Officer Steve Climpson ATC said:

Sir Frank Whittle is the only inventor of the Jet Engine, The patent was available in Germany and this fact allowed Hans Von Ohain to build a working engine, but he had NO part in its invention!.

December 19, 2007

kunoichi of death said:

he is in fact right.Doing a research on it ATM and Whittle was the only creater behind the jet engine.

February 01, 2008

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