4. Acoustics
  5. Sound-modifying means
  6. Muffler, fluid conducting type

David S Warren

Examiner

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Acoustic absorber and sound-absorption method

Acoustics – Sound-modifying means – Muffler – fluid conducting type
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Computerized music teaching instrument

Music – Accessories – Teaching devices
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Earmold for improved retention of coupled device

Acoustics – Anatomic or prosthetic relation – Ear and mouth
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Environmentally protected microphone for an active noise...

Acoustics – Sound-modifying means – Muffler – fluid conducting type
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Sound barrier layer for insulated heat shield

Acoustics – Sound-modifying means – Sound absorbing panels
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Profile ID: LFUS-PAI-P-2619127

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