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

Alfred Ziegenberg

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Acceleration detector

Measuring and testing – Vibration – Sensing apparatus
Patent

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Loudspeaker

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

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Loudspeaker diaphragm provided with a rear load

Acoustics – Plural diaphragm sound sources
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Permanent magnet system with associated coil arrangement

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent

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Profile ID: LFUS-PAI-P-596279

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