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Listening device for hands-free system

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

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Live performance audio mixing system with simplified user...

Electrical audio signal processing systems and devices – With mixer
Reexamination Certificate

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Living organism conductive actuator

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

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Load and dispersion cell for sound

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

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Location aware directed audio

Electrical audio signal processing systems and devices – One-way audio signal program distribution
Reexamination Certificate

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Locking device for a hearing aid battery chamber

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

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Locking mechanism for electronics module for hearing...

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

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Long-time balancing of omni microphones

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

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Loud speaker

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

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Loud speaker

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

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Loud speaker structure

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

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Loud speaker, diaphragm and process for making the diaphragm

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

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Loud-speaker combined with a device for producing lighting effec

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

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Loudness control circuit

Electrical audio signal processing systems and devices – Including frequency control – Automatic tone control
Patent

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Loudness control circuit for selectively emphasizing both high f

Electrical audio signal processing systems and devices – Including amplitude or volume control
Patent

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Loudness limiter

Electrical audio signal processing systems and devices – Hearing aids – electrical
Patent

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Loudness volume control system

Electrical audio signal processing systems and devices – Including frequency control – Automatic tone control
Reexamination Certificate

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Loudness-controlled processing of acoustic signals

Electrical audio signal processing systems and devices – Including amplitude or volume control – Automatic
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Loudspeader overload protection

Electrical audio signal processing systems and devices – Audio transducer protection circuitry
Patent

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Loudspeaker

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

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