Which inventor created the first vacuum-sealed food packaging system in the 1940s that revolutionized food preservation?

In the world of inventions and discoveries, product packaging innovation has often been overlooked despite its significant impact on consumer behavior and environmental sustainability. Some packaging breakthroughs have revolutionized entire industries, changing how products are preserved, transported, and consumed. This poll tests your knowledge about a groundbreaking packaging invention that transformed food preservation.

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Karl Busch, who developed the first commercial vacuum sealer after noticing food spoilage issues during WWII rationing
Lloyd Copeman, who invented a rubber seal system for preservation jars that led to vacuum technology
Bernard Leinert, who invented the first vacuum-sealed can that extended shelf life without refrigeration
Max Huber, who patented the 'Airless Package' system that removed oxygen to preserve military rations