Technological Advances from 1920 to 1940: Inventing the Future

The years of 1920-1940 were a time of great advancement. They created new means of transportation on land and in the sky. We created the newest medicines that would change the way that the world lived. The great depression was upon this country, but we were continuing to advance.

This timeline focuses on the advancements of technology between the years 1920 and 1940. Many great advencements were made during these years and this timeline can be used to show them in a simple and condensed format.


The television or iconoscope (cathode-ray tube) was invented by Vladimir Kosma Zworykin

Colt Revolver

Patented by Smauel Colt


Invented by Karl Pabst

Electron Microscope

First Invented

First Succesful Helicopter

Invented by Igor Sikorsky

Dynamic Loudspeaker

Invented by Rice and Kellog

Tommy Gun

It was patented by John T. Thompson.


It was invented by Earle Dickson.

First Robot Built

Artificial life begins with the first robot built.

Lie Detector

Invented by John Larson

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