4. Recording, communication, or information retrieval equipment
  5. Video or audio transmission, recording or playback equipment
  6. Element or attachment

Haruhisa Tanabe

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Condenser microphone

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

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Condenser microphone and method for manufacturing the same

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

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Electret microphone

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Reexamination Certificate

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Electret microphone

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Reexamination Certificate

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Method for manufacturing condenser microphones

Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2572278

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