LandOfFree - US Patents - Listing for Electrical audio signal processing systems and devices

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Directional hearing device

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

Reexamination Certificate

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Directional hearing system

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

Patent

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Directional horn speaker system

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

Reexamination Certificate

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Directional horn speaker system

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

Patent

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Directional ITE hearing aid using dual-input microphone

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

Reexamination Certificate

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Directional loudspeaker unit

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

Reexamination Certificate

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Directional microphone

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

Patent

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Directional microphone

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

Reexamination Certificate

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Directional microphone

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

Patent

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Directional microphone

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

Reexamination Certificate

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Directional microphone apparatus

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

Patent

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Directional microphone arrangement

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

Patent

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Directional microphone array system

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

Reexamination Certificate

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