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The Complete History of The Burroughs Adding Machine
The Burroughs Adding Machine can still be purchased today from sites like eBay, usually for between $70 and $300, or more depending on the condition of the machine. At one point the Burroughs Adding ...
Several prominent inventors of adding machines had associations with St. Louis.Two of them were patent attorney Halcolm Ellis and mechanical engineer Nathan W. Perkins Jr. In 1902 they took out a ...
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