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

Katsuyoshi Kumagai

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Diaphragm for use in electro-acoustic transducer

Acoustics – Diaphragm – Critically defined material or coating
Patent

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Flame-retarded acoustic diaphragm

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...
Patent

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Profile ID: LFUS-PAI-P-932902

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