4. Recording, communication, or information retrieval equipment
  5. Video or audio transmission, recording or playback equipment
  6. Element or attachment

Mark Donaldson

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Audio jack with plug or head set identification circuit

Electrical connectors – Alternatively connected – Coupling part
Reexamination Certificate

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Audio jack with plug or head set identification circuit

Electrical connectors – Alternatively connected – Coupling part
Reexamination Certificate

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Form tie sleeves for composite action insulated concrete...

Static structures (e.g. – buildings) – Facers; e.g. – modules – mutually bonded by internal settable... – Laterally related modules; e.g. – back-to-back
Reexamination Certificate

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Noise cancellation system and headphone therefor

Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – Adjacent ear
Reexamination Certificate

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Set of earphones

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

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Profile ID: LFUS-PAI-P-2401538

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