4. Measuring, testing, or signalling instruments
  5. Security or signal instrument or casing
  6. Aural, i.e., audible

Yoshikazu Tsuchikiri

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Audible signal for alarms

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

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Electroacoustic transducer

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

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Electroacoustic transducer

Communications – electrical: acoustic wave systems and devices – Signal transducers – Receivers
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2445486

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