4. Acoustics
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  6. Critically defined material or coating
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Magnetic speaker

Acoustics – Diaphragm – Critically defined material or coating
Patent

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Membrane for electroacoustic converter systems

Acoustics – Diaphragm – Critically defined material or coating
Patent

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Method for manufacturing speaker-use center cap

Acoustics – Diaphragm – Critically defined material or coating
Reexamination Certificate

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Method of making metal coated foil speaker diaphragm

Acoustics – Diaphragm – Critically defined material or coating
Patent

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Method of manufacturing speaker diaphragm

Acoustics – Diaphragm – Critically defined material or coating
Patent

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Molded foam resin, process for forming the same and speaker...

Acoustics – Diaphragm – Critically defined material or coating
Reexamination Certificate

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Molded foam resin, process for forming the same and speaker...

Acoustics – Diaphragm – Critically defined material or coating
Reexamination Certificate

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