4. Electrical audio signal processing systems and devices
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Optimum solution method, hearing aid fitting apparatus...

Electrical audio signal processing systems and devices – Hearing aids – electrical – Directional
Reexamination Certificate

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Optimum solution method, hearing aid fitting apparatus...

Electrical audio signal processing systems and devices – Hearing aids – electrical – Directional
Reexamination Certificate

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Oral readout rangefinder

Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices – Loudspeaker operation
Patent

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Oral sound analysis method and apparatus for determining voice,

Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent

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Orientation adjusting apparatus for speakers

Electrical audio signal processing systems and devices – Having non-electrical feature
Reexamination Certificate

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Orthogonal circular microphone array system and method for...

Electrical audio signal processing systems and devices – Directive circuits for microphones
Reexamination Certificate

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Orthogonalized dictionary speech recognition apparatus and metho

Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent

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Oscillation detection

Electrical audio signal processing systems and devices – Hearing aids – electrical – Noise compensation circuit
Reexamination Certificate

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Oscillator frequency control arrangement for a stereo decoder

Electrical audio signal processing systems and devices – Binaural and stereophonic – Broadcast or multiplex stereo
Patent

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Osseous conduction acoustic transducer

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Body contact wave transfer
Reexamination Certificate

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Otoplastic for a hearing aid

Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Reexamination Certificate

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Otoplasty for behind-the-ear (BTE) hearing aids

Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Reexamination Certificate

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Otoplasty for behind-the-ear (BTE) hearing aids

Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Reexamination Certificate

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Otoplasty for behind-the-ear (BTE) hearing aids

Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Reexamination Certificate

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Out-of-lock detector for synchronous AM detection

Electrical audio signal processing systems and devices – Binaural and stereophonic – Broadcast or multiplex stereo
Patent

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Outdoor loudspeaker system

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Patent

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Outer mirror and interphone for a vehicle

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Mounting or support feature of housed loudspeaker
Reexamination Certificate

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Output circuit

Electrical audio signal processing systems and devices – With amplifier
Patent

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Output circuit of audio device

Electrical audio signal processing systems and devices – Binaural and stereophonic – Broadcast or multiplex stereo
Patent

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Output coupling capacitor free audio power amplifier...

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

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