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

Michael C. J. Trinder

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Headphone assemblies

Electrical audio signal processing systems and devices – Hearing protectors – electrical
Patent

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Hydraulic lever actuator

Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
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Muffler

Acoustics – Sound-modifying means – By wave interference
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Noise reduction system

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

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Profile ID: LFUS-PAI-P-981189

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