4. Recording, communication, or information retrieval equipment
  5. Video or audio transmission, recording or playback equipment
  6. Telephone equipment

Arthur N. Nielsen

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Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent

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Keyboard and adjustable display

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent

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System for accommodating third party imaging processing...

Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Reexamination Certificate

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Profile ID: LFUS-PAI-P-568396

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