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Passive personal vocal monitor

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Reexamination Certificate

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Passive sound gathering apparatus

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Patient-to-transducer interface device

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Peripherally reinforced laminated loudspeaker diaphragm

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Permeable aerodam to reduce wind noise

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Personal protective devices having an energy activated material

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Reexamination Certificate

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Piston loudspeaker

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Piston-diaphragm speaker

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Pivoted loudspeaker enclosure with visual indicator of optimum l

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Planar sound reproducing speaker system

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Planar type electro-acoustic transducer and process for manufact

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Plane speaker

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Plexiglas speakers

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Plug for miniature receiver

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Plug-type hearing device

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Pneumatic headset

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Portable acoustic hearing enhancement device

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Reexamination Certificate

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Practical stethoscope cover and dispenser therefor

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Reexamination Certificate

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Pre-cordial stethoscope cover

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Pressure recording process and device

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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