4. Printing and office machinery
  5. Typewriter or calculator
  6. Combined

David D. Pharmer

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Magnetic disk control unit for word processors

Recording – communication – or information retrieval equipment – Computer – data processor equipment
Patent

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Typewriter for word processor

Printing and office machinery – Typewriter or calculator – Combined
Patent

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Profile ID: LFUS-PAI-P-1388263

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