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Period: to
1920s Technology
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Hair Dryer
The first hair dryer was made on January 3rd, 1920 by Alexander F. GodeFroy. He invented it for use in his hair salon in France, and it was not portable or handheld. -
Traffic Light
The multi-color traffic light introduced by, William Potts a police officer in Detroit. Ashville, Ohio claims to be the home of the oldest working traffic light in the United States. -
Lie Detector, Polygraph
First Lie detector made by, John A. Larson a California-Based Police Man and physiologist -
Electric Blender
Made by Poplawski, Stephen J. In 1922 with the purpose of making milkshakes and malts. Stephen J. received patents for a machine that would reduce fruits and vegetables into liquid. -
Television
The first television, Made by Philo Farnsworth on September 7th, 1927.