4. Electrical audio signal processing systems and devices
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Bone conduction voice transmission apparatus and system

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

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Bone conduction voice transmission apparatus and system

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

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Bone conductive speaker

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

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Bone vibrating speaker using the diaphragm and mobile phone...

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

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Bone-conduction handset

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

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Bone-conduction hearing-aid transducer having improved...

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

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Bone-conduction speaker

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

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Bone-conduction transducer and bone-conduction speaker...

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

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Bone-conductive stereo headphones

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

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Book microphone system

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

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Boom mounted microphone and connector

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Thermal response to – or generation of – sound vibration
Patent

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Boomless hearing/speaking configuration for sound receiving...

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

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Boundary layer adapter

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

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Boundary layer microphone

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

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Boundary layer microphone

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

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Boundary microphone

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

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Boundary microphone

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

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Boundary-layer microphone

Electrical audio signal processing systems and devices – Having non-electrical feature – Having microphone
Patent

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Bounded signal mixer and method of operation

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

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Briefcase or carrying case with integrated loudspeaker system

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

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