4. Electrical audio signal processing systems and devices
  5. Audio transducer protection circuitry

Kabushiki Kaisha Seidenko

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Flat speaker unit

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Patent

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Guidance method and apparatus in case of emergency evacuation

Communications: electrical – Systems – Signal light systems
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Sound equipment system

Electrical audio signal processing systems and devices – Audio transducer protection circuitry
Patent

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Speaker

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Speaker or housing therefor
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Profile ID: LFUS-PAI-P-1303927

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