4. Electrical audio signal processing systems and devices
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Back to back mounted compound woofer with...

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

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Back-masking effect generator

Electrical audio signal processing systems and devices – Sound effects
Patent

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Back-masking effect generator

Electrical audio signal processing systems and devices – Sound effects
Patent

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Backpack with integrated speakers

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

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Backplateless silicon microphone

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

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Backplateless silicon microphone

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

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Backplateless silicon microphone

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

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Baffle vibration reducing

Electrical audio signal processing systems and devices – Having non-electrical feature – Loudspeakers driven in given phase relationship
Reexamination Certificate

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Baffle vibration reducing

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

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Baffle vibration reducing

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

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Baffled microphone assembly

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

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Balance control circuit

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

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Balanced armature bone conduction shaker

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

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Balanced output circuit

Electrical audio signal processing systems and devices – Noise or distortion suppression – Interpolation
Patent

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Balanced vehicular speaker system

Electrical audio signal processing systems and devices – Vehicle
Patent

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Balloon-expandable hearing device fitting system and...

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

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Balloon-expandable hearing device fitting system and...

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

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Band pass filter circuit for rear channel filtering in a surroun

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

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Band pass speaker

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

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Band-limited adaptive feedback canceller for hearing aids

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

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