Baldwin, Frank Stephen

Baldwin, Frank Stephen

▪ American inventor
born April 10, 1838, New Hartford, Conn., U.S.
died April 8, 1925, Denville, N.J.

      inventor best-known for his development of the Monroe calculator.

      His first calculator, the arithmometer (patented 1875), could add, subtract, multiply, and divide. Economic conditions, however, prevented its immediate manufacture. The Baldwin computing engine (1890) was followed by the Baldwin calculator (1902), but not until 1912 (patent date, 1913), in association with Jay Monroe, did he perfect the Monroe calculator. He remained research director of the Monroe Calculating Machine Company until his death.

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