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This list is eclectic; it includes, for example, the AN/FSQ-7, which was not a product in the sense of offered for sale, but was a product in the sense of manufactured - produced by the labor of IBM. Also missing are RPQs, OEM products (semiconductors, for example), supplies (punched cards, for example), and some machines produced only in Europe, such as the 420 accounting machine. That those products are missing is not by fiat, but simply because no one has added them. IBM sometimes used the same number for a system and for the principal component of that system. For example, the IBM 604 Calculating Unit is a component of the IBM 604 Calculating Punch. |