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Metropolitan Card Punch Machine


Metropolitan Punch Card Machine

Despite its appearance, the Metropolitan was not actually a typewriter. As its 1907 patent states, it was meant to be used as a perforating machine for bookkeeping and banking. Thus, the Metropolitan was an early tabulating punch card machine. One source refers to it as a "Master Punching Machine." Its inventor was John Royden Peirce of New York. The Metropolitan was produced ca.1912 by the Peirce Accounting Machine Company which was purchased in 1921 by the Computing-Tabulating-Recording Company (C-T-R). C-T-R became IBM in 1924.

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