4. Electrical audio signal processing systems and devices
  5. Directive circuits for microphones

Jeffrey Phillip McAteer

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Direction finder

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

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Directional microphone

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Element or attachment
Patent

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Directional microphone

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Element or attachment
Patent

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Directional microphone assembly

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

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Transducer package with transducer die unsupported by a...

Active solid-state devices (e.g. – transistors – solid-state diode – Housing or package – For plural devices
Reexamination Certificate

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Profile ID: LFUS-PAI-P-383271

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