4. Electrical audio signal processing systems and devices
  5. Acoustical noise or sound cancellation
  6. Adjacent ear

Gerald A. Powell

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Adjustable supporting bracket having plural ball and socket join

Supports – Brackets – Adjustable
Patent

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Ear defenders employing active noise control

Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – Adjacent ear
Patent

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Profile ID: LFUS-PAI-P-907231

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