4. Electrical audio signal processing systems and devices
  5. Binaural and stereophonic
  6. Hearing aid

Polk Audio Inc.

Corporate Assignee

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Corporate Assignee

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Audio system

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Radio receiver – tuner or amplifier – or housing therefor
Design Patent

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Compact audio reproduction system with large perceived...

Electrical audio signal processing systems and devices – Binaural and stereophonic – Stereo speaker arrangement
Reexamination Certificate

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Method and apparatus for reproducing sound having a realistic am

Electrical audio signal processing systems and devices – Binaural and stereophonic – Hearing aid
Patent

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Method and apparatus for reproducing sound having a realistic am

Electrical audio signal processing systems and devices – Binaural and stereophonic – Hearing aid
Patent

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Method and apparatus for reproducing sound having an expanded ac

Electrical audio signal processing systems and devices – Binaural and stereophonic – Hearing aid
Patent

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