4. Acoustics
  5. Diaphragm
  6. Critically defined material or coating

Nobuo Fuke

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Diaphragm

Acoustics – Diaphragm – Critically defined material or coating
Patent

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Diaphragm for loudspeakers

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
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Horn speaker system

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
Patent

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Speaker unit with an improved acoustic equalizer

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer
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Profile ID: LFUS-PAI-P-826641

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