4. Education and demonstration
  5. Anatomy, physiology, therapeutic treatment, or surgery...

Kenneth B. Hecht

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Method and apparatus for safely and intelligibly directing sound

Education and demonstration – Anatomy – physiology – therapeutic treatment – or surgery...
Patent

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Speaker frame housing and clamp assembly for wall or ceiling...

Supports – Brackets – Article holding means
Reexamination Certificate

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Wall mounted speaker enclosure

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Mounting or support feature of housed loudspeaker
Reexamination Certificate

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Profile ID: LFUS-PAI-P-656868

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