4. Electrical audio signal processing systems and devices
  5. Monitoring/measuring of audio devices
  6. Testing of hearing aids

Robert C. Michaels

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Combination earmold and receiver adapter

Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices – Testing of hearing aids
Patent

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Contoured nasal air purifier

Medical and laboratory equipment – Equipment for diagnosis – analysis – or treatment – Filter
Design Patent

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Enhanced personal air purifier

Surgery – Respiratory method or device – Means for removing substance from respiratory gas
Reexamination Certificate

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Internal nasal dilator filter

Surgery – Respiratory method or device – Means for removing substance from respiratory gas
Reexamination Certificate

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Personal air purifier

Surgery – Respiratory method or device – Means for removing substance from respiratory gas
Reexamination Certificate

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Profile ID: LFUS-PAI-P-931492

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