4. Telephonic communications
  5. Terminal accessory or auxiliary equipment
  6. Including coupler

Keld T. Helmuth

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Hearing aid transducer or the like

Medical and laboratory equipment – Equipment for diagnosis – analysis – or treatment – Orthopedic or chiropractic
Patent

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Telephone handset attachment for use in-the-ear hearing aids

Telephonic communications – Terminal accessory or auxiliary equipment – Including coupler
Patent

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Profile ID: LFUS-PAI-P-439033

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