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Although preservation of food using tin cans had been practiced since at least 1772 in the Netherlands, the first can openers were patented only in 1855 in England and in 1858 in the United States. Those openers were basically variations of a knife, and the 1855 design continues to be produced.

Rotating Cutting Wheel Tin Can Opener

Although preservation of food using tin cans had been practiced since at least 1772 in the Netherlands,…