4. Metal working
  5. Method of mechanical manufacture
  6. Electrical device making

Naoyuki Kigawa

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Audible signal for alarm units

Measuring – testing – or signalling instruments – Security or signal instrument or casing – Aural – i.e. – audible
Patent

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Audible signal for alarm units

Measuring – testing – or signalling instruments – Security or signal instrument or casing – Aural – i.e. – audible
Patent

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Electroacoustic transducer

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

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Electroacoustic transducer and electronic equipment using the sa

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

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Method of manufacturing electroacoustic transducer

Metal working – Method of mechanical manufacture – Electrical device making
Patent

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Profile ID: LFUS-PAI-P-849710

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