4. Communications, electrical: acoustic wave systems and devices
  5. Signal transducers
  6. Underwater type

Kazuya Yamasaki

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Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent

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Speaker

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Speaker or housing therefor
Design Patent

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Speaker

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Speaker or housing therefor
Design Patent

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Speaker

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Speaker or housing therefor
Design Patent

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Speaker and device using the same

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1321128

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