4. Typewriting machines
  5. Platen or platen-moving mechanism
  6. Cylindrical platen

Ivor Weller

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Apparatus and method for controlling the positioning of marking

Typewriting machines – Having power-driven operator for plural functions
Patent

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Head assembly for magnetic recorders

Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent

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Impact printer platen support

Typewriting machines – Platen or platen-moving mechanism – Cylindrical platen
Patent

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Profile ID: LFUS-PAI-P-1252080

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