投稿者：ATK115 さん

The pull tab, or pop top, was invented in the early 1960s by Robert W. Anderson and first used on beer cans in 1963. The pull tab revolutionized can opening and made it much easier to open a can of beer. Pull tabs were very popular for many years, but eventually fell out of favor due to concerns about environmental pollution and safety. it was a fun model to make while learning topology maybe i w…