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See also: Supermarkets
BAR CODES
The bar code, those stripes of varying width that appear on virtually every price tag or package today, was invented by Joseph Woodland and Bernard Silver. They were issued US Patent #2,612,994 on October 7, 1952.
The first bar code scanner was installed in a Cincinnati Kroger's supermarket in 1967.
In 1974 the modern UPC (Universal Product Code) ‘symbol set’ for bar coding, and the UPC scanner, were first used at Marsh's supermarket in Troy, Ohio.
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