U.S. Design Patent 268,109 (USD268109S)

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A patent drawing of IBM's operator console of a telephone switching system from a front-right perspective
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NameOperator console of a telephone switching system
InventorsDaniel Richelet, Gilbert Pedinielli
AssigneesIBM
DescriptionAn ornamental design depicting the IBM 1750 Switching System's 1755 Operator Console.