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The first successful adding machine in the United States is patented by William Seward Burroughs.
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Adding machine
Type of mechanical calculator designed to perform basic arithmetic
An adding machine is a class of mechanical calculator, usually specialized for bookkeeping calculations. Consequently, the earliest adding machines were often designed to read in particular currencies. Adding machines were ubiquitous office equipment in developed countries for…Source: Wikipedia (CC BY-SA)
William Seward Burroughs I
American inventor and businessman (1857–1898)
William Seward Burroughs I was an American inventor born in Rochester, New York.Source: Wikipedia (CC BY-SA)