4. Recording, communication, or information retrieval equipment
  5. Computer, data processor equipment

Mitsukatsu Nagashima

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Collapsible headphone structure

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Speaker

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

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Speaker

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Speaker or housing therefor
Patent

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Travel route display system

Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1198510

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