LandOfFree - US Patents - Listing for Electrical audio signal processing systems and devices,Electro-acoustic audio transducer

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Dual function transducer housing

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

Patent

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Dual horn folded soundpath loudspeaker

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

Patent

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Dual microphone assembly for mask

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

Reexamination Certificate

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Dual mode transducer for a portable receiver

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

Patent

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Dual voice coil sound reproducing device

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

Patent

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Dual-frequency coaxial earphones

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

Reexamination Certificate

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Dynamic loudspeaker for producing high audio power

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

Patent

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Dynamic microphone

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

Patent

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Dynamic microphone

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

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Dynamic microphone

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

Patent

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Dynamic pressure sensing structure

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

Reexamination Certificate

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Dynamic transducer device

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

Patent

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