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

Nikolai Bisgaard

Inventor

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Combined earphone and microphone

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

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Digital hearing aid system

Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent

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Locking device for a hearing aid battery chamber

Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent

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Time controlled hearing aid

Electrical audio signal processing systems and devices – Hearing aids – electrical
Reexamination Certificate

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Time-controlled hearing aid

Electrical audio signal processing systems and devices – Hearing aids – electrical
Reexamination Certificate

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Profile ID: LFUS-PAI-P-968519

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