4. Telephonic communications
  5. Diagnostic testing, malfunction indication, or electrical...
  6. Monitoring

Frederick M. Kruger

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Method and apparatus for screening telephone calls in response t

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Monitoring
Patent

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Two active element in-the-ear microphone system

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Body contact wave transfer
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Profile ID: LFUS-PAI-P-1644534

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