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The can opener was invented in 1855 by Robert Yates from the United Kingdom. His version had a lever knife with a curved blade to cut the can open. For more information look here:
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Knowing who invented the can opener is an interesting fact to know. The can opener was invented by Ezra Warnet and was invented after cans were invented. The entire story is quite
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Daniel Hale Williams invented open heart surgery. He was born January 18, 1856 in Pennsylvania on July 9, 1893 he performed the first open heart surgery on a stabbing victim.
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It is unknown, but it was first seen in April, 1738.
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