Inventions and Discoveries of the Twentieth Century Inventions of the Twentieth CenturyPlease enable JavaScriptInventions of the Twentieth CenturyInventors 1900 to 1999 Atomic Power Computers Helicopters and Igor Sikorsky The Internet The Jet Engine Robert Goddard The Personal Computer Plastic John Logie Baird and Television Flight and the Wright Brothers Inventions 1900 to 1990
