4. Active solid-state devices (e.g., transistors, solid-state diode
  5. Field effect device
  6. Having insulated electrode

Tohru Yamaoka

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Electret condenser

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Microphone capsule only
Reexamination Certificate

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Electret condenser microphone

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Microphone capsule only
Reexamination Certificate

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Electret covered with an insulated film and an electret...

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Microphone capsule only
Reexamination Certificate

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MEMS device, MEMS device module and acoustic transducer

Active solid-state devices (e.g. – transistors – solid-state diode – Responsive to non-electrical signal – Physical deformation
Reexamination Certificate

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MEMS device, MEMS device module and acoustic transducer

Active solid-state devices (e.g. – transistors – solid-state diode – Responsive to non-electrical signal – Physical deformation
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2739404

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