Inventions that Shook the World

The 1930s (1x4)

Air date: Jan 01, 2011

In a decade dominated by the Great Depression, the inventors of the 1930s are desperately trying to make a living. They come up with some simple yet ingenious inventions that are still practical necessities in our fast-paced life. Featured inventions: Helicopter Xerography Parking Meter Walkie Talkie Electric Guitar