HowStuffWorks via myPod

Garrett Morgan patents the three-position traffic signal - November 20th, 1923

Listen Later
iHeartRadio & HowStuffWorks


On this day in 1923, prolific inventor and entrepreneur Garrett Morgan received the patent for a traffic light signal of his own design. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com


https://www.listennotes.com/e/c5b883599b924e8f94a1172742d5a98b/
...more
View all episodesView all episodes
Download on the App Store
HowStuffWorks via myPodBy Joshua Hoover
  • 1
  • 1
  • 1
  • 1
  • 1

1

1 ratings

More shows like HowStuffWorks via myPod

View all
Stuff You Should Know by iHeartPodcasts

Stuff You Should Know

77,738 Listeners