Which packaging invention, patented in 1963, allowed for more efficient stacking and distribution of beverage cans, reducing shipping space requirements by approximately 20%?

Packaging design revolutionized how products reach consumers, particularly in the beverage industry. One specific invention transformed logistics, reduced costs, and became ubiquitous worldwide. This poll tests your knowledge about a groundbreaking packaging innovation that changed how beverages are transported, stored, and sold globally - affecting everything from manufacturing to environmental impact.

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The pull-tab can opener
The ring-pull aluminum can
The plastic six-pack holder
The TetraPak carton