U.S. Design Patent 284,671 (USD284671S)

Provided by the ASK Keyboard Patents database

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NameTypewriter
InventorsPeter J. Mendel
AssigneesIBM Information Products
DescriptionAn ornamental design depicting the IBM 6770 Wheelwriter System and 6780 Quietwriter System electronic typewriters and the 6770/6780 System Movable Keyboard (Model M).