4. Recording, communication, or information retrieval equipment
  5. Video or audio transmission, recording or playback equipment
  6. Speaker or housing therefor

Peter Hsieh

Attorney

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Attorney

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Adapter for communications headset

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

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Adaptive transmit amplifier

Telephonic communications – Substation or terminal circuitry
Reexamination Certificate

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Adjustable microphone boom with acoustic valve

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

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Apparatus and method for providing voice telephone instructions

Telephonic communications – Telephone line or system combined with diverse electrical... – Remote control
Reexamination Certificate

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Auditory user interface

Telephonic communications – Supervisory or control line signaling – Signal reception at substation
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2431497

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