4. Electrical audio signal processing systems and devices
  5. Electro-acoustic audio transducer
  6. Microphone capsule only

Chung Dam Song

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Condenser microphone

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Element or attachment
Design Patent

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Condenser microphone

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Element or attachment
Design Patent

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Directional silicon condenser microphone having additional...

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

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Integrated base and electret condenser microphone using the...

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

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Laser video projector using optical pumping valve

Television – Video display – Projection device
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2203223

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