4. Electrical audio signal processing systems and devices
  5. Hearing aids, electrical
  6. Specified casing or housing

Raimund Staat

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Boundary layer microphone

Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Patent

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Capacitor microphone

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Microphone capsule only
Patent

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Directional microphone, in particular having symmetrical...

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Housed microphone
Reexamination Certificate

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Microphone

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

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Profile ID: LFUS-PAI-P-382729

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