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Mamoru Yasuda

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Condenser microphone

Patent

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Control device for cyclic sewing machine

Sewing – Special machines – Buttonhole
Patent

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Diaphragm unit of a condenser microphone, a method of fabricatin

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

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Electret condenser microphone unit

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

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Electret-condenser microphone

Electrical audio signal processing systems and devices – Circuitry combined with specific type microphone or loudspeaker – With electrostatic microphone
Reexamination Certificate

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Profile ID: LFUS-PAI-P-103874

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