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Subcarrier injection system and method using adaptive level-shif

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

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Subcarrier signal generator for use in stereo tuners

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

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Submersible headphones

Electrical audio signal processing systems and devices – Headphone circuits
Reexamination Certificate

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Submersible personal stereo

Electrical audio signal processing systems and devices – Binaural and stereophonic – Hearing aid
Patent

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Subminiature bone vibrating speaker using the diaphragm and...

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

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Subwoofer

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate

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Subwoofer assembly

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
Reexamination Certificate

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Subwoofer assembly

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

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Subwoofer speaker system

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

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Subwoofer speaker system

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Detail of mechanical vibration coupling to transducer
Patent

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Subwoofer with cascaded linear array of drivers

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
Reexamination Certificate

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Subwoofer--loudspeaker box

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

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Sunglasses with adjustable ventilation

Electrical audio signal processing systems and devices – Sound effects – Tremelo or vibrato effects
Reexamination Certificate

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Sunroof assembly noise attenuation system

Electrical audio signal processing systems and devices – Vehicle
Patent

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Super directional beamforming design and implementation

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

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Super resolving partial wave analyzer-transceiver

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

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Super tweeter

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate

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Super-directional loudspeaker using ultrasonic wave

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

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Superdistorted amplifier circuitry with normal gain

Electrical audio signal processing systems and devices – Sound effects
Patent

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Supersonic bone conduction hearing aid and method

Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent

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