William Seward Burroughs Patents First Calculator
August 21 1888

adding machine
william seward burroughs
patent
technology


Description
The first successful adding machine in the United States is patented by William Seward Burroughs.
Location
References
William Seward Burroughs Iexternal
United Statesexternal
Adding machineexternal
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Created By: johnny
Created On: 2015-04-30T21:30:50Z

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