Stulen's brother worked at Curtis Wright Propeller, and mentioned that they were using punched card calculators for engineering calculations.
2.
In 1949, Remington Rand designed the Remington Rand 409, a control panel programmed punched card calculator ( but not introduced as a product until 1952 as the UNIVAC 60 then in 1953 as the UNIVAC 120 with double the memory ).
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