4. Communications: electrical
  5. Audible indication
  6. Diaphragm

Kuang-yao Lin

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Alarm

Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent

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Buzzer with a sound film and equalizing or whirlpool sound mecha

Communications: electrical – Audible indication – Diaphragm
Patent

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Horn type loudspeakers

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

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Piezoelectric speakers

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electrostrictive – magnetostrictive – or piezoelectric
Patent

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Profile ID: LFUS-PAI-P-367323

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