GreaterFalls buddy Ron says:”Found THIS in a field today while walking my dogs. Like if you can remember when you last pulled one from your beer or soda. You know its gotta be old. What does that say about us?”
According to the infallible Wikipedia:
In 1962, Ermal Cleon Fraze of Dayton, Ohio, United States, invented the similar integral rivet and pull-tab version (also known as ring pull in British English), which had a ring attached at the rivet for pulling, and which would come off completely to be discarded. He received US Patent No. 3,349,949 for his pull-top can design in 1963 and licensed his invention to Alcoa and Pittsburgh Brewing Company…The early pull-tabs detached easily. The Journal of the American Medical Association noted cases of children ingesting pull-tabs that had broken off and dropped into the can.