When and why did breweries stop using pop-top cans?

Beer and soda cans have gone through three major stages in the U.S. The first earliest beer cans, which debuted in 1935, sported a flat top that required a tool called a church key to open. By 1963, a Dayton, Ohio man named Ernie Fraze thought he had a better idea. He invented and patented the pull-tab beer can. But the tabs and rings had their drawbacks, too. Read more